10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 10-Q

[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended   June 30, 2011

OR

[  ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to  ______

Commission file number   1-11353

LABORATORY CORPORATION OF

AMERICA HOLDINGS

(Exact name of registrant as specified in its charter)

Delaware	13-3757370
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

358 South Main Street,
Burlington, North Carolina	27215
(Address of principal executive offices)	(Zip Code)

(Registrant's telephone number, including area code) 336-229-1127

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports) and (2) has been subject to such filing requirements for the past 90 days. Yes [X] No [  ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (paragraph 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [X] No [  ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer [X]	Accelerated Filer [  ]
Non-accelerated filer [  ] (Do not check if a smaller reporting company)	Smaller reporting company [  ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes [  ] No [X].

The number of shares outstanding of the issuer's common stock is 101.4 million shares, net of treasury stock as of July 21, 2011.

INDEX

PART I. FINANCIAL INFORMATION

Item 1	Financial Statements:
	Condensed Consolidated Balance Sheets
	June 30, 2011 and December 31, 2010
	Condensed Consolidated Statements of Operations
	Three and six month periods ended June 30, 2011 and 2010
	Condensed Consolidated Statements of Changes in Shareholders’ Equity
	Six months ended June 30, 2011 and 2010
	Condensed Consolidated Statements of Cash Flows
	Six months ended June 30, 2011 and 2010
	Notes to Unaudited Condensed Consolidated Financial Statements
Item 2	Management’s Discussion and Analysis of Financial
	Condition and Results of Operations
Item 3	Quantitative and Qualitative Disclosures about Market Risk
Item 4	Controls and Procedures

PART II. OTHER INFORMATION

Item 1	Legal Proceedings
Item 1A	Risk Factors
Item 2	Unregistered Sales of Equity Securities and Use of Proceeds
Item 6	Exhibits

2

PART I                      –           FINANCIAL INFORMATION

Item 1.                 –      Financial Statements

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in millions)

(unaudited)

	June 30,			December 31,
	2011			2010
ASSETS
Current assets:
Cash and cash equivalents	$	118.9		$	230.7
Accounts receivable, net of allowance for doubtful
accounts of $185.5 and $149.2 at June 30, 2011
and December 31, 2010, respectively		714.8			655.6
Supplies inventories		106.8			103.4
Prepaid expenses and other		64.4			95.7
Deferred income taxes		78.7			58.4
Total current assets		1,083.6			1,143.8
Property, plant and equipment, net		586.4			586.9
Goodwill, net		2,644.3			2,601.3
Intangible assets, net		1,676.0			1,674.1
Joint venture partnerships and equity method investments		79.4			78.5
Other assets, net		98.6			103.2
Total assets	$	6,168.3		$	6,187.8
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	212.5		$	257.8
Accrued expenses and other		444.7			352.9
Noncontrolling interest		153.4			148.1
Short-term borrowings and current portion of long-term debt		215.1			361.7
Total current liabilities		1,025.7			1,120.5
Long-term debt, less current portion		1,788.2			1,826.7
Deferred income taxes and other tax liabilities		586.8			602.3
Other liabilities		166.4			151.4
Total liabilities		3,567.1			3,700.9
Commitments and contingent liabilities		--			--
Noncontrolling interest		21.4			20.6
Shareholders’ equity
Common stock, 101.4 and 102.4 shares outstanding at
June 30, 2011 and December 31, 2010, respectively		12.1			12.2
Additional paid-in capital		72.7			53.9
Retained earnings		3,326.6			3,246.6
Less common stock held in treasury		(940.9	)		(934.9	)
Accumulated other comprehensive income		109.3			88.5
Total shareholders’ equity		2,579.8			2,466.3
Total liabilities and shareholders’ equity	$	6,168.3		$	6,187.8

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

3

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in millions, except per share data)

(unaudited)

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Net sales	$	1,403.3		$	1,238.4		$	2,771.7		$	2,432.0
Cost of sales		815.1			704.8			1,615.1			1,391.5
Gross profit		588.2			533.6			1,156.6			1,040.5
Selling, general and administrative
expenses		322.7			245.4			605.5			491.4
Amortization of intangibles and other assets		21.5			17.7			43.4			35.1
Restructuring and other special charges		18.3			--			46.2			9.3
Operating income		225.7			270.5			461.5			504.7
Other income (expenses):
Interest expense		(21.0	)		(14.5	)		(45.0	)		(29.1	)
Equity method income, net		2.6			4.6			4.1			8.4
Investment income		0.2			0.2			0.5			0.5
Other, net		(0.2	)		(0.8	)		(0.1	)		(1.4	)
Earnings before income taxes		207.3			260.0			421.0			483.1
Provision for income taxes		80.6			102.8			163.7			189.7
Net earnings		126.7			157.2			257.3			293.4
Less: Net earnings attributable to the
noncontrolling interest		(3.8	)		(3.5	)		(7.3	)		(7.0	)
Net earnings attributable to Laboratory
Corporation of America Holdings	$	122.9		$	153.7		$	250.0		$	286.4
Basic earnings per common share	$	1.22		$	1.48		$	2.49		$	2.75
Diluted earnings per common share	$	1.20		$	1.46		$	2.44		$	2.70

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

4

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN

SHAREHOLDERS’ EQUITY

(in millions)

(unaudited)

													Accumulated
				Additional									Other			Total
	Common			Paid-in			Retained			Treasury			Comprehensive			Shareholders’
	Stock			Capital			Earnings			Stock			Income			Equity
BALANCE AT DECEMBER 31, 2009	$	12.5		$	36.7		$	2,927.9		$	(932.5	)	$	61.5		$	2,106.1
Comprehensive earnings:
Net earnings attributable to Laboratory
Corporation of America Holdings		--			--			286.4			--			--			286.4
Other comprehensive earnings:
Foreign currency translation adjustments		--			--			--			--			(7.9	)		(7.9	)
Interest rate swap adjustments		--			--			--			--			4.0			4.0
Tax effect of other comprehensive
earnings adjustments		--			--			--			--			1.4			1.4
Comprehensive earnings																	283.9
Issuance of common stock under
employee stock plans		0.1			36.6			--			--			--			36.7
Surrender of restricted stock awards		--			--			--			(2.4	)		--			(2.4	)
Stock compensation		--			19.4			--			--			--			19.4
Value of noncontrolling interest put		--			(17.2	)		--			--			--			(17.2	)
Income tax benefit from stock
options exercised		--			4.2			--			--			--			4.2
Purchase of common stock		(0.3	)		(79.7	)		(141.7	)		--			--			(221.7	)
BALANCE AT JUNE 30, 2010	$	12.3		$	--		$	3,072.6		$	(934.9	)	$	59.0		$	2,209.0
BALANCE AT DECEMBER 31, 2010	$	12.2		$	53.9		$	3,246.6		$	(934.9	)	$	88.5		$	2,466.3
Comprehensive earnings:
Net earnings attributable to Laboratory
Corporation of America Holdings		--			--			250.0			--			--			250.0
Other comprehensive earnings:
Foreign currency translation adjustments		--			--			--			--			30.7			30.7
Interest rate swap adjustments		--			--			--			--			2.4			2.4
Tax effect of other comprehensive
earnings adjustments		--			--			--			--			(12.3	)		(12.3	)
Comprehensive earnings																	270.8
Issuance of common stock under
employee stock plans		0.1			102.8			--			--			--			102.9
Surrender of restricted stock and
performance share awards		--			--			--			(6.0	)		--			(6.0	)
Conversion of zero-coupon convertible debt		0.1			36.1			--			--			--			36.2
Stock compensation		--			25.5			--			--			--			25.5
Income tax benefit from stock
options exercised		--			9.9			--			--			--			9.9
Purchase of common stock		(0.3	)		(155.5	)		(170.0	)		--			--			(325.8	)
BALANCE AT JUNE  30, 2011	$	12.1		$	72.7		$	3,326.6		$	(940.9	)	$	109.3		$	2,579.8

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

5

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions)

(unaudited)

	Six Months Ended
	June 30,
	2011			2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$	257.3		$	293.4
Adjustments to reconcile net earnings to net cash provided by
operating activities:
Depreciation and amortization		115.9			100.1
Stock compensation		25.5			19.4
Loss on sale of assets		0.4			1.3
Accreted interest on zero-coupon subordinated notes		2.5			2.9
Cumulative earnings less than distribution
from equity method investments		0.4			--
Deferred income taxes		(19.5	)		3.5
Change in assets and liabilities (net of effects of acquisitions):
Increase in accounts receivable (net)		(58.4	)		(37.0	)
(Increase) decrease in inventories		(2.7	)		3.8
Decrease in prepaid expenses and other		24.7			11.0
Increase (decrease) in accounts payable		(57.3	)		9.1
Increase in accrued expenses and other		111.4			40.7
Net cash provided by operating activities		400.2			448.2
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures		(75.2	)		(59.0	)
Proceeds from sale of assets		3.1			2.4
Deferred payments on acquisitions		(0.2	)		(2.0	)
Acquisition of licensing technology		--			(0.4	)
Acquisition of businesses, net of cash acquired		(45.0	)		(174.9	)
Net cash used for investing activities		(117.3	)		(233.9	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facilities		85.0			95.0
Payments on revolving credit facilities		(85.0	)		(140.0	)
Principal payments on term loan		(37.5	)		(25.0	)
Payments on zero-coupon subordinated notes		(149.1	)		(4.3	)
Payments on vendor-financed equipment		--			(1.3	)
Increase in bank overdraft		6.0			--
Payments on long-term debt		(0.8	)		--
Payment of debt issuance costs		(0.5	)		--
Proceeds from sale of interest in a consolidated subsidiary		--			137.5
Cash paid to acquire an interest in a consolidated subsidiary		--			(137.5	)
Noncontrolling interest distributions		(2.7	)		(5.8	)
Excess tax benefits from stock based compensation		9.6			2.5
Net proceeds from issuance of stock to employees		102.9			36.7
Purchase of common stock		(322.8	)		(216.2	)
Net cash used for financing activities		(394.9	)		(258.4	)
Effect of exchange rate changes on cash and cash equivalents		0.2			(0.6	)
Net decrease in cash and cash equivalents		(111.8	)		(44.7	)
Cash and cash equivalents at beginning of period		230.7			148.5
Cash and cash equivalents at end of period	$	118.9		$	103.8

The accompanying notes are an integral part of these unaudited condensed consolidated financial statements.

6

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

1.  BASIS OF FINANCIAL STATEMENT PRESENTATION

     The consolidated financial statements include the accounts of Laboratory Corporation of America Holdings (the “Company”) and its majority-owned subsidiaries for which it exercises control. Long-term investments in affiliated companies in which the Company exercises significant influence, but which it does not control, are accounted for using the equity method. Investments in which the Company does not exercise significant influence (generally, when the Company has an investment of less than 20% and no representation on the investee’s board of directors) are accounted for using the cost method. All significant inter-company transactions and accounts have been eliminated. The Company does not have any variable interest entities or special purpose entities whose financial results are not included in the condensed consolidated financial statements.

     The financial statements of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities are translated at exchange rates as of the balance sheet date. Revenues and expenses are translated at average monthly exchange rates prevailing during the period. Resulting translation adjustments are included in “Accumulated other comprehensive income.”

     The accompanying condensed consolidated financial statements of the Company are unaudited. In the opinion of management, all adjustments necessary for a fair statement of results of operations, cash flows and financial position have been made. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Interim results are not necessarily indicative of results for a full year. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles.

     The financial statements and notes are presented in accordance with the rules and regulations of the Securities and Exchange Commission and do not contain certain information included in the Company’s 2010 Annual Report on Form 10-K. Therefore, the interim statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s annual report.

2.  EARNINGS PER SHARE

     Basic earnings per share is computed by dividing net earnings by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net earnings including the impact of dilutive adjustments by the weighted average number of common shares outstanding plus potentially dilutive shares, as if they had been issued at the earlier of the date of issuance or the beginning of the period presented. Potentially dilutive common shares result primarily from the Company’s outstanding stock options, restricted stock awards, performance share awards, and shares issuable upon conversion of zero-coupon subordinated notes.

     The following represents a reconciliation of basic earnings per share to diluted earnings per share:

	Three Months Ended June 30,												Six Months Ended June 30,
			2011						2010						2011						2010
					Per						Per						Per						Per
					Share						Share						Share						Share
	Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount
Basic earnings
per share:
Net earnings	$	122.9		100.6	$	1.22	$	153.7		103.5	$	1.48	$	250.0		100.4	$	2.49	$	286.4		104.0	$	2.75
Dilutive effect of
employee  stock
options and awards		--		1.3				--		0.9				--		1.3				--		0.9
Effect of convertible
debt, net of tax		--		0.9				--		1.0				--		0.9				--		1.0
Diluted earnings
per share:
Net earnings
including impact of
dilutive adjustments	$	122.9		102.8	$	1.20	$	153.7		105.4	$	1.46	$	250.0		102.6	$	2.44	$	286.4		105.9	$	2.70

7

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

     The following table summarizes the potential common shares not included in the computation of diluted earnings per share because their impact would have been antidilutive:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Stock options		1.4		2.8		1.2		4.0

3. NEW ACCOUNTING PRONOUNCEMENTS

     In June 2011, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance on the presentation of comprehensive income. Specifically, this literature allows an entity to present components of net earnings and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The authoritative guidance eliminates the current option to report other comprehensive income and its components in the statement of changes in shareholders’ equity. While the authoritative guidance changes the presentation of comprehensive income, there are no changes to the components that are recognized in net earnings or other comprehensive income under current accounting guidance. The guidance is effective for fiscal years and interim periods beginning after December 15, 2011. The Company does not believe the adoption of the authoritative guidance in the first quarter of fiscal 2012 will have an impact on its consolidated financial position, results of operations or cash flows.

     In May 2011, the FASB issued authoritative guidance to achieve common fair value measurement and disclosure requirements between U.S. generally accepted accounting principles and International Financial Reporting Standards. This new literature amends current fair value measurement and disclosure guidance to include increased transparency around valuation inputs and investment categorization. The guidance is effective for fiscal years and interim periods beginning after December 15, 2011. The Company does not believe the adoption of the authoritative guidance in the first quarter of fiscal 2012 will have an impact on its consolidated financial statements.

4.  NONCONTROLLING INTEREST PUTS

The partnership units of the holders of the noncontrolling interest in the Ontario, Canada ("Ontario") joint venture were acquired by the Company on February 8, 2010 for $137.5. On February 17, 2010, the Company completed a transaction to sell the units acquired from the previous noncontrolling interest holder to a new Canadian partner for the same price. As a result of this transaction, the Company recorded a component of noncontrolling interest in other liabilities and a component in mezzanine equity. Upon the completion of these two transactions, the Company’s financial ownership percentage in the joint venture partnership remained unchanged at 85.6%. Concurrent with the sale to the new partner, the partnership agreement for the Ontario joint venture was amended and restated with substantially the same terms as the previous agreement. The combined contractual value of these puts, in excess of the current noncontrolling interest of $30.7, totals $144.1 at June 30, 2011. At June 30, 2011, $153.4 has been classified as a current liability in the Company’s condensed consolidated balance sheet as the noncontrolling interest that acquired these units has the ability to put its units in the partnership to the Company on December 31, 2011.

     Net sales of the Ontario joint venture for the six month and three month periods ended June 30, 2011 were $154.9 (CN$151.2) and $80.8 (CN$78.1), respectively, and $140.0 (CN$144.8) and $71.1 (CN$73.1) for the six month and three month periods ended June 30, 2010, respectively.

8

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

5.  RESTRUCTURING AND OTHER SPECIAL CHARGES

     During the first six months of 2011, the Company recorded net restructuring charges of $24.2. Of this amount, $13.3 related to severance and other personnel costs, and $13.8 primarily related to facility-related costs associated with the ongoing integration of the Genzyme Genetics* and Westcliff acquisitions. These charges were offset by restructuring credits of $2.9 resulting from the reversal of unused severance and facility closure liabilities. In addition, the Company recorded fixed assets impairment charges of $7.2 primarily related to equipment and leasehold improvements in closed facilities. The Company also recorded a special charge of $14.8 related to a write-off of certain assets and liabilities related to an investment made in a prior year.

     During the first quarter of 2010, the Company recorded net restructuring charges of $3.1 related to severance payments and the closing of redundant and underutilized facilities. Of this amount, $3.9 related to severance and other employee costs for employees primarily in the affected facilities, and $0.6 related to contractual obligations associated with leased facilities and other facility related costs. The Company also reduced its prior facility related restructuring accruals by $1.4 as a result of incurring less cost than planned on those restructuring initiatives primarily due to favorable settlements on lease buyouts. In addition, the Company recorded a special charge of $6.2 related to the write-off of development costs incurred on systems abandoned during the quarter.

* Genzyme Genetics and its logo are trademarks of Genzyme Corporation and used by Esoterix Genetic Laboratories, LLC (“EGL”), a wholly-owned subsidiary of the Company, under license. EGL and the Company are operated independently from Genzyme Corporation.

6.  RESTRUCTURING RESERVES

The following represents the Company’s restructuring activities for the period indicated:

	Severance			Lease
	and Other			and Other
	Employee			Facility
	Costs			Costs			Total
Balance as of December 31, 2010	$	4.9		$	12.9		$	17.8
Restructuring charges		13.3			13.8			27.1
Reduction of prior restructuring accruals		(2.4	)		(0.5	)		(2.9	)
Cash payments and other adjustments		(6.4	)		(3.9	)		(10.3	)
Balance as of June 30, 2011	$	9.4		$	22.3		$	31.7
Current							$	19.0
Non-current								12.7
							$	31.7

7.  GOODWILL AND INTANGIBLE ASSETS

     The changes in the carrying amount of goodwill for the six-month period ended June 30, 2011 and for the year ended December 31, 2010 are as follows:

	June 30,			December 31,
	2011			2010
Balance as of January 1	$	2,601.3		$	1,897.1
Goodwill acquired during the period		44.2			704.4
Adjustments to goodwill		(1.2	)		(0.2	)
Balance at end of period	$	2,644.3		$	2,601.3

9

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

The components of identifiable intangible assets are as follows:

	June 30, 2011					December 31, 2010
	Gross					Gross
	Carrying		Accumulated			Carrying		Accumulated
	Amount		Amortization			Amount		Amortization
Customer relationships	$	1,163.3	$	(399.1	)	$	1,146.0	$	(370.0	)
Patents, licenses and technology		144.7		(82.0	)		144.7		(75.7	)
Non-compete agreements		28.0		(12.1	)		26.6		(9.4	)
Trade name		123.5		(55.6	)		123.3		(50.3	)
Canadian licenses		765.3		--			738.9		--
	$	2,224.8	$	(548.8	)	$	2,179.5	$	(505.4	)

     Amortization of intangible assets for the six month and three month periods ended June 30, 2011 was $43.4 and $21.5, respectively, and $35.1 and $17.7 for the six month and three month periods ended June 30, 2010, respectively. Amortization expense for the net carrying amount of intangible assets is estimated to be $42.7 for the remainder of fiscal 2011, $81.8 in fiscal 2012, $76.2 in fiscal 2013, $73.4 in fiscal 2014, $69.8 in fiscal 2015 and $566.8 thereafter.

     The Ontario operation had $765.3 and $738.9 of value assigned to the partnership’s indefinite lived Canadian licenses to conduct diagnostic testing services in the province as of June 30, 2011 and December 31, 2010, respectively.

8.  DEBT

     Short-term borrowings and the current portion of long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Zero-coupon convertible subordinated notes	$	140.1	$	286.7
Term loan, current		75.0		75.0
Total short-term borrowings and current portion
of long-term debt	$	215.1	$	361.7

     Long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Senior notes due 2013	$	350.7	$	350.9
Senior notes due 2015		250.0		250.0
Senior notes due 2016		325.0		325.0
Senior notes due 2020		600.0		600.0
Term loan, non-current		262.5		300.0
Other long-term debt		--		0.8
Total long-term debt	$	1,788.2	$	1,826.7

Zero-coupon Subordinated Notes

     During the six months ended June 30, 2011, the Company settled notices to convert approximately $183.2 aggregate principal amount at maturity of its zero-coupon subordinated notes with a conversion value of $240.7. The total cash used for these settlements was $149.1 and the Company also issued 0.9 additional shares of common stock. As a result of these conversions, the Company also reversed approximately $36.1 of deferred tax liability to reflect the tax benefit realized upon issuance of the shares. The Company's zero-coupon subordinated notes are considered common stock equivalents and are included in the potentially diluted shares as disclosed in footnote 2. Earnings Per Share.

10

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

     On March 14, 2011, the Company announced that for the period of March 12, 2011 to September 11, 2011, the zero-coupon subordinated notes will accrue contingent cash interest at a rate of no less than 0.125% of the average market price of a zero-coupon subordinated note for the five trading days ended March 9, 2011, in addition to the continued accrual of the original issue discount.

     On July 1, 2011, the Company announced that its zero-coupon subordinated notes may be converted into cash and common stock at the conversion rate of 13.4108 per $1,000 principal amount at maturity of the notes, subject to the terms of the zero-coupon subordinated notes and the Indenture, dated as of October 24, 2006 between the Company and The Bank of New York Mellon, as trustee and conversion agent. In order to exercise the option to convert all or a portion of the zero-coupon subordinated notes, holders are required to validly surrender their zero-coupon subordinated notes at any time during the calendar quarter beginning July 1, 2011, through the close of business on the last business day of the calendar quarter, which is 5:00 p.m., New York City time, on Friday, September 30, 2011.

Credit Facilities

    The balances outstanding on the Company’s Term Loan Facility at June 30, 2011 and December 31, 2010 were $337.5 and $375.0, respectively. There were no balances outstanding on the Company’s Revolving Facility at June 30, 2011 and December 31, 2010. The Term Loan Facility and Revolving Facility bear interest at varying rates based upon LIBOR plus a percentage based on the Company’s credit rating with Standard & Poor’s Ratings Services. The Term Loan Facility and Revolving Facility contain certain debt covenants which require that the Company maintain a leverage ratio of no more than 2.5 to 1.0 and an interest coverage ratio of at least 5.0 to 1.0. Both ratios are calculated in relation to EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization). The credit agreement allows payment of dividends provided that the Company is not in default (as defined in the agreement) and its leverage ratio is less than 2.0 to 1.0. The Company was in compliance with all covenants as of June 30, 2011. As of June 30, 2011, the leverage and interest coverage ratios were 1.6 to 1.0 and 14.9 to 1.0, respectively.

     As of June 30, 2011, the effective interest rates on the Term Loan Facility and Revolving Facility were 0.87% and 0.54%, respectively.

9. PREFERRED STOCK AND COMMON SHAREHOLDERS’ EQUITY

     The Company is authorized to issue up to 265.0 shares of common stock, par value $0.10 per share. The Company’s treasury shares are recorded at aggregate cost. The Company is authorized to issue up to 30.0 shares of preferred stock, par value $0.10 per share. There were no preferred shares outstanding as of June 30, 2011.

     The changes in common shares issued and held in treasury are summarized below:

				Held in
	Issued			Treasury			Outstanding
Common shares at December 31, 2010		124.5			(22.1	)		102.4
Common stock issued under employee stock plans		1.7			--			1.7
Common stock issued upon conversion of zero-coupon
subordinated notes		0.9			--			0.9
Surrender of restricted stock and performance share awards		--			(0.1	)		(0.1	)
Retirement of common stock		(3.5	)		--			(3.5	)
Common shares at June 30, 2011		123.6			(22.2	)		101.4

Share Repurchase Program

     As of December 31, 2010, the Company had outstanding authorization from the Board of Directors to purchase approximately $234.3 of Company common stock. On February 10, 2011, the Company announced the Board of Directors authorized the purchase of $500.0 of additional shares of the Company’s common stock. During the six months ended June 30, 2011, the Company purchasedapproximately 3.5 shares of its common stock at a total cost of approximately $325.8. As of June 30, 2011, the Company had outstanding authorization from the Board of Directors to purchase approximately $408.5 of Company common stock.

11

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

10. INCOME TAXES

     The Company does not recognize a tax benefit, unless the Company concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, the Company recognizes a tax benefit measured at the largest amount of the tax benefit that the Company believes is greater than 50% likely to be realized.

     The gross unrecognized income tax benefits were $57.9 and $53.6 at June 30, 2011 and December 31, 2010, respectively. It is anticipated that the amount of the unrecognized income tax benefits will change within the next twelve months; however, these changes are not expected to have a significant impact on the results of operations, cash flows or the financial position of the Company.

     As of June 30, 2011 and December 31, 2010, $58.9 and $54.6, respectively, is the approximate amount of unrecognized income tax benefits that, if recognized, would favorably affect the effective income tax rate in future periods.

     The Company recognizes interest and penalties related to unrecognized income tax benefits in income tax expense. Accrued interest and penalties related to uncertain tax positions totaled $13.9 and $12.2 as of June 30, 2011 and December 31, 2010, respectively.

     The Company has substantially concluded all U.S. federal income tax matters for years through 2006. Substantially all material state and local, and foreign income tax matters have been concluded through 2005 and 2001, respectively.

     The Company has various state income tax examinations ongoing throughout the year. Management believes adequate provisions have been recorded related to all open tax years.

11. COMMITMENTS AND CONTINGENCIES

     The Company is involved in a number of judicial, regulatory, and arbitration proceedings (including those described below) concerning matters arising in connection with the conduct of the Company’s business activities. Many of these proceedings are at preliminary stages, and many of these cases seek an indeterminate amount of damages.

     The Company records an aggregate legal reserve, which is determined using actuarial calculations around historical loss rates and assessment of trends experienced in settlements and defense costs. In accordance with ASC 450 “Contingencies”, the Company establishes reserves for judicial, regulatory, and arbitration matters outside the aggregate legal reserve if and when those matters present loss contingencies that are both probable and estimable and would exceed the aggregate legal reserve.  When loss contingencies are not both probable and estimable, the Company does not establish separate reserves.

     Management is unable to estimate a range of reasonably possible loss for cases described below in which damages either have not been specified or, in management’s judgment, are unsupported and/or exaggerated and (i) the proceedings are in early stages; (ii) there is uncertainty as to the outcome of pending appeals or motions; (iii) there are significant factual issues to be resolved; and/or (iv) there are novel legal issues to be presented. For these cases, however, management does not believe, based on currently available information, that the outcomes of these proceedings will have a material adverse effect on the Company’s financial condition, though the outcomes could be material to the Company’s operating results for any particular period, depending, in part, upon the operating results for such period.

     A subsidiary of the Company, DIANON Systems, Inc. (“DIANON”), is the appellant in a wrongful termination lawsuit originally filed by G. Berry Schumann in Superior Court in the State of Connecticut.  After a jury trial, the state court entered judgment against DIANON, with total damages, attorney’s fees, and pre-judgment interest payable by DIANON, of approximately $10.0. DIANON filed a notice ofappeal in December 2009, and the case has been transferred to the Connecticut Supreme Court. The Court heard oral argument on May 18, 2011 and the parties await the Court's decision on DIANON's appeal.

12

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

     As previously reported on July 14, 2011, the Company reached an agreement in principle to settle the previously disclosed lawsuit, California ex rel. Hunter Laboratories, LLC et al. v. Quest Diagnostics Incorporated, et al., to avoid the uncertainty and costs associated with prolonged litigation. The original lawsuit was brought against the Company and several other major laboratories operating in California and alleged that the defendants improperly billed the state Medicaid program and, therefore, violated the California False Claims Act. The original complaint was dismissed on the basis of (i) misjoinder and (ii) lack of particularity in the claims and a separate amended complaint was filed against the Company on December 14, 2009. The complaint against the Company sought a refund of alleged overpayments made to the Company from November 7, 1995 through November 2009, plus simple interest of 7% per year, calculated as of the filing date to total $97.5. In addition, the suit sought continuing damages past November 2009 plus treble damages, civil penalties of $0.01 per each alleged false claim, recovery of costs, attorney’s fees, and legal expenses, and pre- and post-judgment interest. The Company filed an answer to the new Complaint on February 5, 2010. Pursuant to the settlement in principle, the Company will pay $49.5 to resolve all claims brought against the Company in the lawsuit without any admission of liability. As a result of the settlement in principle, the Company recorded litigation settlement expense of $34.5 (net of a previously recorded reserve of $15.0) in the second quarter of 2011. The settlement is subject to the negotiation and execution of a Settlement Agreement and Release.

     In addition, the Company has received three other subpoenas since 2007 related to Medicaid billing. In June 2010, the Company received a subpoena from the State of Florida requesting documents related to its billing to Florida Medicaid. In February 2009, the Company received a subpoena from the Commonwealth of Virginia seeking documents related to the Company’s billing for state Medicaid. In October 2009, the Company received a subpoena from the State of Michigan seeking documents related to its billing to Michigan Medicaid. The Company also responded to an October 2007 subpoena from the United States Office of Inspector General’s regional office in New York and a September 2009 subpoena from the United States Office of Inspector General’s regional office in Massachusetts regarding certain of its billing practices. The Company is cooperating with the requests.

     On August 19, 2010, Aetna, Inc., Aetna Health Holdings, LLC and Aetna Health Management, LLC filed a lawsuit against Laboratory Corporation of America Holdings in the United States District Court for the Eastern District of Pennsylvania, alleging unfair competition, misrepresentation, interference and breach of contract, and violation of trade secret laws. Aetna is seeking unspecified monetary damages and equitable relief. The Company filed a motion to dismiss the complaint and the Court issued an order dismissing the case on May 26, 2011. On June 6, 2011, the Plaintiffs filed a motion for reconsideration of the Court's ruling, and on July 18, 2011, the Court issued an order denying the motion.

     The Company is involved from time to time in various claims and legal actions, including arbitrations, class actions, and other litigation, arising in the ordinary course of business. Some of these actions involve claims that are substantial in amount. These matters include, but are not limited to, intellectual property disputes, professional liability, employee related matters, and inquiries, including subpoenas and other civil investigative demands, from governmental agencies and Medicare or Medicaid payers and managed care payers reviewing billing practices or requesting comment on allegations of billing irregularities that are brought to their attention through billing audits or third parties. The Company works cooperatively to respond to appropriate requests for information.

13

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

     The Company is also named from time to time in suits brought under the qui tam provisions of the False Claims Act and comparable state laws. These suits typically allege that the Company has made false statements and/or certifications in connection with claims for payment from federal or state health care programs. They may remain under seal (hence, unknown to the Company) for some time while the government decides whether to intervene on behalf of the qui tam plaintiff. Such claims are an inevitable part of doing business in the health care field today.

     The Company believes that it is in compliance in all material respects with all statutes, regulations and other requirements applicable to its clinical laboratory operations. The clinical laboratory testing industry is, however, subject to extensive regulation, and the courts have not interpreted many of these statutes and regulations. There can be no assurance therefore that those applicable statutes and regulations will not be interpreted or applied by a prosecutorial, regulatory or judicial authority in a manner that would adversely affect the Company. Potential sanctions for violation of these statutes and regulations include significant fines and the loss of various licenses, certificates and authorizations.

     Under the Company’s present insurance programs, coverage is obtained for catastrophic exposure as well as those risks required to be insured by law or contract. The Company is responsible for the uninsured portion of losses related primarily to general, professional and vehicle liability, certain medical costs and workers’ compensation. The self-insured retentions are on a per occurrence basis without any aggregate annual limit. Provisions for losses expected under these programs are recorded based upon the Company’s estimates of the aggregated liability of claims incurred. At June 30, 2011, the Company had provided letters of credit aggregating approximately $37.3, primarily in connection with certain insurance programs. The Company’s availability under its Revolving Facility is reduced by the amount of these letters of credit.

At June 30, 2011, the Company was a guarantor on approximately $1.0 of equipment leases. These leases were entered into by a joint venture in which the Company owns a 50% interest and have a remaining term of approximately one year.

12. PENSION AND POSTRETIREMENT PLANS

     The Company’s defined contribution retirement plan (the “401K Plan”) covers substantially all employees. All employees eligible for the 401K Plan receive a minimum 3% non-elective contribution concurrent with each payroll period. The 401K Plan also permits discretionary contributions by the Company of 1% to 3% of pay for eligible employees based on service. The cost of this plan was $22.4 and $19.8 for the six months ended June 30, 2011 and 2010, respectively.

     The Company also maintains a frozen defined benefit retirement plan (the “Company Plan”), that as of December 31, 2009, covered substantially all employees. The benefits to be paid under the Company Plan are based on years of credited service through December 31, 2009 and ongoing interest credits. Effective January 1, 2010, the Company Plan was closed to new participants. The Company’s policy is to fund the Company Plan with at least the minimum amount required by applicable regulations.

     The Company maintains a second unfunded, non-contributory, non-qualified defined benefit retirement plan (the “PEP”), that as of December 31, 2009, covered substantially all of its senior management group. The PEP supplements the Company Plan and was closed to new participants effective January 1, 2010.

The effect on operations for the Company Plan and the PEP is summarized as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Service cost for benefits earned	$	0.7		$	0.6		$	1.3		$	1.3
Interest cost on benefit obligation		4.2			4.6			8.6			9.2
Expected return on plan assets		(4.8	)		(4.6	)		(9.3	)		(9.3	)
Net amortization and deferral		2.0			2.0			3.7			4.0
Defined benefit plan costs	$	2.1		$	2.6		$	4.3		$	5.2

14

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

     For the six months ended June 30, 2011 and 2010, the Company made no contributions to its defined benefit retirement plan.

     The Company assumed obligations under a subsidiary’s post-retirement medical plan. Coverage under this plan is restricted to a limited number of existing employees of the subsidiary. This plan is unfunded and the Company’s policy is to fund benefits as claims are incurred. The effect on operations of the post-retirement medical plan is shown in the following table:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2011		2010			2011		2010
Service cost for benefits earned	$	0.1	$	0.1		$	0.2	$	0.2
Interest cost on benefit obligation		0.5		0.6			1.1		1.2
Net amortization and deferral		--		(0.1	)		--		(0.3	)
Postretirement medical plan costs	$	0.6	$	0.6		$	1.3	$	1.1

13. FAIR VALUE MEASUREMENTS

     The Company’s population of financial assets and liabilities subject to fair value measurements as of June 30, 2011 and December 31, 2010 are as follows:

	Fair value		Fair Value Measurements as of
	as of		June 30, 2011
	June 30,		Using Fair Value Hierarchy
	2011		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	174.8	$	--	$	174.8	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		--		--		--		--
Total fair value of derivatives	$	--	$	--	$	--	$	--

	Fair value		Fair Value Measurements as of
	as of		December 31, 2010
	December 31,		Using Fair Value Hierarchy
	2010		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	168.7	$	--	$	168.7	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		2.4		--		2.4		--
Total fair value of derivatives	$	2.4	$	--	$	2.4	$	--

     The noncontrolling interest puts are valued at their contractually determined values, which approximate fair values. The fair values for the embedded derivatives and interest rate swap are based on observable inputs or quoted market prices from various banks for similar instruments.

     The carrying amounts of cash and cash equivalents, accounts receivable, income taxes receivable, and accounts payable are considered to be representative of their respective fair values due to their short-term nature. The fair market value of the zero-coupon subordinated notes, based on market pricing, was approximately $222.6 and $419.5 as of June 30, 2011 and December 31, 2010, respectively. The fair market value of the senior notes, based on market pricing, was approximately $1,594.8 and $1,549.8 as of June 30, 2011 and December 31, 2010, respectively. As of June 30, 2011 and December 31, 2010, theestimated fair market value of the Company’s variable rate debt of $336.1 and $370.1, respectively, was estimated by calculating the net present value of related cash flows, discounted at current market rates.

15

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

14. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

     The Company addresses its exposure to market risks, principally the market risk associated with changes in interest rates, through a controlled program of risk management that includes, from time to time, the use of derivative financial instruments such as interest rate swap agreements (see Interest Rate Swap section below). Although the Company’s zero-coupon subordinated notes contain features that are considered to be embedded derivative instruments (see Embedded Derivative section below), the Company does not hold or issue derivative financial instruments for trading purposes. The Company does not believe that its exposure to market risk is material to the Company’s financial position or results of operations.

Interest Rate Swap

     The interest rate swap agreement to hedge variable interest rate risk on the Company’s variable interest rate term loan expired on March 31, 2011. On a quarterly basis under the swap, the Company paid a fixed rate of interest (2.92%) and received a variable rate of interest based on the three-month LIBOR rate on an amortizing notional amount of indebtedness equivalent to the term loan balance outstanding. The swap was designated as a cash flow hedge. Accordingly, the Company recognized the fair value of the swap in the condensed consolidated balance sheets and any changes in the fair value were recorded as adjustments to accumulated other comprehensive income (loss), net of tax. The fair value of the interest rate swap agreement was the estimated amount that the Company would have paid or received to terminate the swap agreement at the reporting date. The fair value of the swap was a liability of $2.4 at December 31, 2010 and was included in other liabilities in the respective condensed consolidated balance sheet.

Embedded Derivatives Related to the Zero-Coupon Subordinated Notes

     The Company’s zero-coupon subordinated notes contain the following two features that are considered to be embedded derivative instruments under authoritative guidance in connection with accounting for derivative instruments and hedging activities:

1)	The Company will pay contingent cash interest on the zero-coupon subordinated notes after September 11, 2006, if the average market price of the notes equals 120% or more of the sum of the issue price, accrued original issue discount and contingent additional principal, if any, for a specified measurement period.
2)	Holders may surrender zero-coupon subordinated notes for conversion during any period in which the rating assigned to the zero-coupon subordinated notes by Standard & Poor’s Ratings Services is BB- or lower.

     The Company believes these embedded derivatives had no fair value at June 30, 2011 and December 31, 2010. These embedded derivatives also had no impact on the condensed consolidated statements of operations for the six months ended June 30, 2011 and 2010.

     The following table summarizes the fair value and presentation in the condensed consolidated balance sheets for derivatives designated as hedging instruments (interest rate swap liability derivative) as of June 30, 2011 and December 31, 2010, respectively:

	Fair Value as of
	June 30,		December 31,
Balance Sheet Location	2011		2010
Other liabilities	$	--	$	2.4

     The following table summarizes the effect of the interest rate swap on other comprehensive income for the six months ended June 30, 2011 and 2010:

	2011		2010
Effective portion of derivative gain	$	2.4	$	4.0

16

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(dollars and shares in millions, except per share data)

15. SUPPLEMENTAL CASH FLOW INFORMATION

	Six Months Ended
	June 30,
	2011		2010
Supplemental schedule of cash flow information:
Cash paid during period for:
Interest	$	39.4	$	24.2
Income taxes, net of refunds		148.4		155.7
Disclosure of non-cash financing and investing activities:
Accrued repurchases of common stock	$	3.0	$	5.5

16. BUSINESS ACQUISITIONS

     During the six months ended June 30, 2011, the Company acquired various laboratories and related assets for approximately $45.0 in cash (net of cash acquired). These acquisitions were made primarily to extend the Company's geographic reach in important market areas and/or enhance the Company's scientific differentiation and esoteric testing capabilities.

     In April 2011, the Company and Orchid Cellmark Inc. (“Orchid”) announced that they had entered into a definitive agreement and plan of merger under which the Company will acquire all of the outstanding shares of Orchid in a cash tender offer for $2.80 per share for a total purchase price to stockholders and optionholders of approximately $85.4. The tender offer and the merger are subject to customary closing conditions set forth in the agreement and plan of merger, including the acquisition in the tender offer of a majority of Orchid’s fully diluted shares and the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (“HSR Act”). The closing of the acquisition is expected in the third quarter of 2011. The Company has received lawsuits filed by putative classes of shareholders of Orchid in New Jersey and Delaware state courts and federal court in New Jersey alleging breaches of fiduciary duty and/or other violations of state law arising out of the proposed acquisition of Orchid. Both Orchid and the Company are named in the lawsuits. The federal court lawsuit was subsequently dismissed and the New Jersey state court actions have been stayed. The remaining Delaware lawsuits have been consolidated and will be vigorously defended.

     In addition, the Company has received a request for additional information (commonly referred to as a "Second Request") from the Federal Trade Commission ("FTC") in connection with the Company's proposed acquisition of Orchid. The Company is cooperating with FTC staff since the Company originally filed its required notification pursuant to the HSR Act on April 18, 2011. The Company intends to continue to cooperate with the FTC to obtain clearance as promptly as possible. The issuance of the Second Request extends the HSR Act waiting period to ten days after the Company has substantially complied with the request, unless that period is terminated earlier by the FTC.

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

FORWARD-LOOKING STATEMENTS

     The Company has made in this report, and from time to time may otherwise make in its public filings, press releases and discussions by Company management, forward-looking statements concerning the Company’s operations, performance and financial condition, as well as its strategic objectives. Some of these forward-looking statements can be identified by the use of forward-looking words such as “believes”, “expects”, “may”, “will”, “should”, “seeks”, “approximately”, “intends”, “plans”, “estimates”, or “anticipates” or the negative of those words or other comparable terminology. Such forward-looking statements are subject to various risks and uncertainties and the Company claims the protection afforded by the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. Actual results could differ materially from those currently anticipated due to a number of factors in addition to those discussed elsewhere herein and in the Company’s other public filings, press releases and discussions with Company management, including:

1.	changes in federal, state, local and third party payer regulations or policies or other future reforms in the health care system (or in the interpretation of current regulations), new insurance or payment systems, including state or regional insurance cooperatives, new public insurance programs or a single-payer system, affecting governmental and third-party coverage or reimbursement for clinical laboratory testing;
2.	adverse results from investigations or audits of clinical laboratories by the government, which may include significant monetary damages, refunds and/or exclusion from the Medicare and Medicaid programs;
3.	loss or suspension of a license or imposition of a fine or penalties under, or future changes in, or interpretations of, the law or regulations of the Clinical Laboratory Improvement Act of 1967, and the Clinical Laboratory Improvement Amendments of 1988, or those of Medicare, Medicaid, the False Claims Act or other federal, state or local agencies;
4.	failure to comply with the Federal Occupational Safety and Health Administration requirements and the Needlestick Safety and Prevention Act, which may result in penalties and loss of licensure;
5.	failure to comply with HIPAA, including changes to federal and state privacy and security obligations and changes to HIPAA, including those changes included within HITECH and any subsequent amendments, which could result in increased costs, denial of claims and/or significant penalties;
6.	failure to maintain the security of customer-related information or compliance with security requirements could damage the Company’s reputation with customers, cause it to incur substantial additional costs and become subject to litigation;
7.	failure of the Company, third party payers or physicians to comply with Version 5010 Transactions by January 1, 2012 or the ICD-10-CM Code Set issued by the Department of Health and Human Services and effective for claims submitted as of October 1, 2013;
8.	increased competition, including competition from companies that do not comply with existing laws or regulations or otherwise disregard compliance standards in the industry;
9.	increased price competition, competitive bidding for laboratory tests and/or changes or reductions to fee schedules;
10.	changes in payer mix, including an increase in capitated reimbursement mechanisms or the impact of a shift to consumer-driven health plans;
11.	failure to obtain and retain new customers and alliance partners, or a reduction in tests ordered or specimens submitted by existing customers;
12.	failure to retain or attract managed care business as a result of changes in business models, including new risk based or network approaches, or other changes in strategy or business models by managed care companies;

18

13.	failure to effectively integrate and/or manage newly acquired businesses, including Genzyme Genetics, and the cost related to such integrations;
14.	the effects of the acquisition of Genzyme Genetics on the Company’s cash position and levels of indebtedness;
15.	adverse results in litigation matters;
16.	inability to attract and retain experienced and qualified personnel;
17.	failure to maintain the Company’s days sales outstanding and/or bad debt expense levels;
18.	decrease in the Company’s credit ratings by Standard & Poor’s and/or Moody’s;
19.	discontinuation or recalls of existing testing products;
20.	failure to develop or acquire licenses for new or improved technologies, or customers using new technologies to perform their own tests;
21.	inability to commercialize newly licensed tests or technologies or to obtain appropriate coverage or reimbursement for such tests, which could result in impairment in the value of certain capitalized licensing costs;
22.	changes in government regulations or policies, including regulations and policies of the Food and Drug Administration, affecting the approval, availability of, and the selling and marketing of diagnostic tests;
23.	inability to obtain and maintain adequate patent and other proprietary rights for protection of the Company’s products and services and successfully enforce the Company’s proprietary rights;
24.	the scope, validity and enforceability of patents and other proprietary rights held by third parties which might have an impact on the Company’s ability to develop, perform, or market the Company’s tests or operate its business;
25.	failure in the Company’s information technology systems resulting in an increase in testing turnaround time or billing processes or the failure to meet future regulatory or customer information technology, data security and connectivity requirements;
26.	failure of the Company’s financial information systems resulting in failure to meet required financial reporting deadlines;
27.	failure of the Company's disaster recovery plans to provide adequate protection against the interruption of business and/or to permit the recovery of business operations;
28.	business interruption or other impact on the business due to adverse weather (including hurricanes), fires and/or other natural disasters, terrorism or other criminal acts, and/or widespread outbreak of influenza or other pandemic illness;
29.	liabilities that result from the inability to comply with corporate governance requirements;
30.	significant deterioration in the economy or financial markets which could negatively impact the Company’s testing volumes, cash collections and the availability of credit for general liquidity or other financing needs;
31.	changes in reimbursement by foreign governments and foreign currency fluctuations; and
32.	expenses and risks associated with international operations, including compliance with laws and regulations that differ from the United States, and economic, political, legal, operational and other risks associated with foreign markets.

19

GENERAL (dollars in millions, except per share data)

     During the first six months of 2011, the Company continued to strengthen its financial performance through volume growth in its core and esoteric testing, pricing discipline and expense control.

     On December 1, 2010, the Company acquired Genzyme Genetics, a business unit of Genzyme Corporation, for approximately $925.2 in cash (net of cash acquired). The Genzyme Genetics acquisition was made to expand the Company’s capabilities in reproductive, genetic, hematology-oncology and clinical trials central laboratory testing, enhance the Company’s esoteric testing capabilities and advance the Company’s personalized medicine strategy.

     On October 28, 2010, in conjunction with the acquisition of Genzyme Genetics, the Company entered into a $925.0 bridge term loan credit agreement. The Company replaced and terminated the bridge term loan credit agreement in November 2010 by making an offering in the debt capital markets. On November 19, 2010, the Company sold $925.0 in debt securities, consisting of $325.0 aggregate principal amount of 3.125% Senior Notes due May 15, 2016 and $600.0 aggregate principal amount of 4.625% Senior Notes due November 15, 2020.

     Due to the normal post-acquisition enrollment process for government payers and contract assignment process for managed care payers, the Company has experienced delays in billing for services rendered by Genzyme Genetics. Cash collections, receivable agings and DSO in the first six months of 2011 were negatively impacted by these delays. The Company expects the delays to be resolved in due course and the related billings and collections to be brought up-to-date during the third quarter of 2011.

RESULTS OF OPERATIONS (amounts in millions except Revenue Per Requisition info)

     Operating results for the six months ended June 30, 2011 and 2010 were negatively impacted by severe winter weather primarily in the eastern and middle sections of the country during the first quarters of 2011 and 2010. The Company’s testing facilities were not damaged by the severe winter weather; however, specimen volume was negatively impacted due to patients’ inability to visit doctors’ offices and patient service centers – the sources of the majority of testing volume.  During the six months ended June 30, 2011 and 2010 inclement weather had an impact on the Company’s results, reducing volume by an estimated 0.5 and 0.6, respectively, and reducing revenue by an estimated $22.0 and $23.0, respectively.

Three months ended June 30, 2011 compared with three months ended June 30, 2010

Net Sales

	Quarter ended June 30,
	2011		2010		% Change
Net sales
Routine Testing	$	790.5	$	745.5		6.0	%
Genomic and Esoteric Testing		532.0		421.8		26.1	%
Ontario, Canada		80.8		71.1		13.6	%
Total	$	1,403.3	$	1,238.4		13.3	%

	Number of Requisitions
	Quarter ended June 30,
	2011		2010		% Change
Volume
Routine Testing		21.5		20.8		3.6	%
Genomic and Esoteric Testing		7.5		6.8		9.6	%
Ontario, Canada		2.4		2.3		1.7	%
Total		31.4		29.9		4.8	%

20

	Quarter ended June 30,
	2011		2010		% Change
Revenue Per Requisition
Routine Testing	$	36.76	$	35.92		2.3	%
Genomic and Esoteric Testing		70.91		61.64		15.0	%
Ontario, Canada		33.80		30.26		11.7	%
Total	$	44.70	$	41.35		8.1	%

     The increase in net sales for the three months ended June 30, 2011 as compared with the corresponding 2010 period was driven primarily by incremental revenue from recent acquisitions including Genzyme Genetics (8% of growth in revenue and 6.4% of growth in revenue per requisition), the Company’s organic volume growth and continued shift in test mix to higher priced genomic and esoteric tests along with growth in revenue per requisition for such testing, and increases in the Canadian exchange rate. Genomic and esoteric testing volume as a percentage of total volume increased from 22.9% in 2010 to 23.9% in 2011. Revenue per requisition and volume growth for genomic and esoteric testing was primarily due to the incremental revenue and volume from Genzyme Genetics. Net sales of the Ontario joint venture were $80.8 for the three months ended June 30, 2011 compared to $71.1 in the corresponding 2010 period, an increase of $9.7, or 13.6%. Net sales of the Ontario joint venture were impacted by a weaker U.S. dollar in 2011 as compared with 2010. In Canadian dollars, net sales of the Ontario joint venture increased by CN$5.0, or 6.8%.

Cost of Sales	Quarter ended June 30,
	2011			2010			% Change
Cost of sales	$	815.1		$	704.8			15.6	%
Cost of sales as a % of sales		58.1	%		56.9	%

     Cost of sales (primarily laboratory and distribution costs) increased 15.6% in the 2011 period as compared with the 2010 period primarily due to incremental costs from recent acquisitions including Genzyme Genetics, increases in labor, and the continued shift in test mix to genomic and esoteric testing. As a percentage of net sales, cost of sales increased to 58.1% in 2011 from 56.9% in 2010. The increase in cost of sales as a percentage of net sales is primarily due to lower margins on recently acquired operations that have not been fully integrated into the Company’s operating cost structure as of June 30, 2011.

Selling, General and Administrative Expenses

	Quarter ended June 30,
	2011			2010			% Change
Selling, general and administrative
expenses	$	322.7		$	245.4			31.5	%
SG&A as a % of sales		23.0	%		19.8	%

     Selling, general and administrative (“SG&A”) expenses as a percentage of net sales increased to 23.0% in the second quarter of 2011 compared to 19.8% in 2010. The increase in SG&A as a percentage of net sales is primarily due to the recently announced settlement of the Hunter Labs litigation in California for $34.5 ($49.5 settlement less previously recorded reserves of $15.0), $1.1 in legal costs associated with the planned acquisition of Orchid Cellmark, and expenses from recently acquired operations that have not been fully integrated into the Company’s operating cost structure as of June 30, 2011. As an offset to the increase in SG&A as a percentage of net sales, bad debt expense decreased to 4.7% of net sales in 2011 as compared with 4.8% in 2010 primarily due to improved collection trends resulting from process improvement programs within the Company’s billing department and field operations.

Amortization of Intangibles and Other Assets

	Quarter ended June 30,
	2011		2010		% Change
Amortization of intangibles and
other assets	$	21.5	$	17.7		21.5	%

     The increase in amortization of intangibles and other assets primarily reflects certain acquisitions closed during 2011 and 2010.

21

Restructuring and Other Special Charges

	Quarter ended June 30,
	2011		2010		% Change
Restructuring and other special charges	$	18.3	$	--		N/A

     During the second quarter of 2011, the Company recorded net restructuring charges of $11.1. Of this amount, $9.3 related to severance and other personnel costs, and $4.0 primarily related to facility-related costs associated with the ongoing integration of the Genzyme Genetics andWestcliff acquisitions. These charges were offset by a restructuring credit of $2.2 resulting from the reversal of unused severance and facility closure liabilities. These restructuring initiatives are expected to provide annualized cost savings of approximately $35.2. In addition, the Company recorded fixed assets impairment charges of $7.2 primarily related to equipment and leasehold improvements in closed facilities.

Interest Expense	Quarter ended June 30,
	2011		2010		% Change
Interest expense	$	21.0	$	14.5		44.8	%

     The increase in interest expense was primarily due to interest incurred during 2011 in connection with proceeds from the senior notes offering of $925.0 in November 2010. Other interest related costs decreased due to lower average borrowings outstanding in the second quarter of 2011 as compared with the 2010 period primarily due to principal payments on the Term Loan Facility and the settlement of approximately $149.1 of the zero-coupon subordinated notes in the first six months of 2011. In addition, the effective interest rate on the Term Loan Facility was lower in 2011 as compared with the 2010 period due to the expiration of the interest rate swap on March 31, 2011.

Equity Method Income

	Quarter ended June 30,
	2011		2010		% Change
Equity method income	$	2.6	$	4.6		(43.5	)%

      Equity method income represents the Company’s ownership share in joint venture partnerships along with stock investments in other companies in the clinical diagnostic industry. The decrease in income in the second quarter of 2011 as compared with the 2010 period is primarily due to the Company’s share of losses in the Cincinnati, Ohio joint venture and the Canada, China and Western Europe equity method investment.

Income Tax Expense	Quarter ended June 30,
	2011			2010			% Change
Income tax expense	$	80.6		$	102.8			(21.6	)%
Income tax expense as a %
of income before tax		38.9	%		39.5	%

     The decrease in the effective tax rate for 2011 as compared to 2010 was primarily the result of lower taxes on foreign earnings.

Six months ended June 30, 2011 compared with six months ended June 30, 2010

Net Sales

	Six Months Ended June 30,
	2011		2010		% Change
Net sales
Routine Testing	$	1,566.5	$	1,463.8		7.0	%
Genomic and Esoteric Testing		1,050.3		828.2		26.8	%
Ontario, Canada		154.9		140.0		10.6	%
Total	$	2,771.7	$	2,432.0		14.0	%

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	Number of Requisitions
	Six Months Ended June 30,
	2011		2010		% Change
Volume
Routine Testing		42.8		41.1		4.3	%
Genomic and Esoteric Testing		14.7		13.3		10.4	%
Ontario, Canada		4.7		4.6		0.7	%
Total		62.2		59.0		5.4	%

	Six Months Ended June 30,
	2011		2010		% Change
Revenue Per Requisition
Routine Testing	$	36.60	$	35.66		2.6	%
Genomic and Esoteric Testing		71.36		62.13		14.9	%
Ontario, Canada		33.19		30.20		9.9	%
Total	$	44.57	$	41.21		8.2	%

     The increase in net sales for the six months ended June 30, 2011 as compared with the corresponding 2010 period was driven primarily by incremental revenue from recent acquisitions including Genzyme Genetics (8% of growth in revenue and 6.5% of growth in revenue per requisition), the Company’s organic volume growth and continued shift in test mix to higher priced genomic and esoteric tests along with growth in revenue per requisition for such testing, and increases in the Canadian exchange rate. Genomic and esoteric testing volume as a percentage of total volume increased from 22.6% in 2010 to 23.7% in 2011. Revenue per requisition and volume growth for genomic and esoteric testing was primarily due to the incremental revenue and volume from Genzyme Genetics. Net sales of the Ontario joint venture were $154.9 for the six months ended June 30, 2011 compared to $140.0 in the corresponding 2010 period, an increase of $14.9, or 10.6%. Net sales of the Ontario joint venture were impacted by a weaker U.S. dollar in 2011 as compared with 2010. In Canadian dollars, net sales of the Ontario joint venture increased by CN$6.4, or 4.4%.

Cost of Sales	Six Months Ended June 30,
	2011			2010			% Change
Cost of sales	$	1,615.1		$	1,391.5			16.1	%
Cost of sales as a % of sales		58.3	%		57.2	%

     Cost of sales (primarily laboratory and distribution costs) increased 16.1% in the 2011 period as compared with the 2010 period primarily due to incremental costs from recent acquisitions including Genzyme Genetics, increases in labor, and the continued shift in test mix to genomic and esoteric testing. As a percentage of net sales, cost of sales increased to 58.3% in 2011 from 57.2% in 2010. The increase in cost of sales as a percentage of net sales is primarily due to lower margins on recently acquired operations that have not been fully integrated into the Company’s operating cost structure as of June 30, 2011.

Selling, General and Administrative Expenses

	Six Months Ended June 30,
	2011			2010			% Change
Selling, general and administrative
expenses	$	605.5		$	491.4			23.2	%
SG&A as a % of sales		21.8	%		20.2	%

     Selling, general and administrative (“SG&A”) expenses as a percentage of net sales increased to 21.8% in the six month period of 2011 compared to 20.2% in 2010. The increase in SG&A as a percentage of net sales is primarily due to the recently announced settlement of the Hunter Labs litigation in California for $34.5 ($49.5 settlement less previously recorded reserves of $15.0), $1.1 in legal costs associated with the planned acquisition of Orchid Cellmark, and expenses from recently acquired operations that have not been fully integrated into the Company’s operating cost structure as of June 30, 2011. As an offset to the increase in SG&A as a percentage of net sales, bad debt expense decreased to 4.7% of net sales in 2011 as compared with 4.9% in 2010 primarily due to improved collection trends resulting from process improvement programs within the Company’s billing department and field operations.

23

Amortization of Intangibles and Other Assets

	Six Months Ended June 30,
	2011		2010		% Change
Amortization of intangibles and
other assets	$	43.4	$	35.1		23.6	%

     The increase in amortization of intangibles and other assets primarily reflects certain acquisitions closed during 2011 and 2010.

Restructuring and Other Special Charges

	Six Months Ended June 30,
	2011		2010		% Change
Restructuring and other special charges	$	46.2	$	9.3		N/A

     During the first six months of 2011, the Company recorded net restructuring charges of $24.2. Of this amount, $13.3 related to severance and other personnel costs, and $13.8 primarily related to facility-related costs associated with the ongoing integration of the Genzyme Genetics and Westcliff acquisitions. These charges were offset by restructuring credits of $2.9 resulting from the reversal of unused severance and facility closure liabilities. These restructuring initiatives are expected to provide annualized cost savings of approximately $48.5. In addition, the Company recorded fixed assets impairment charges of $7.2 primarily related to equipment and leasehold improvements in closed facilities. The Company also recorded a special charge of $14.8 related to a write-off of certain assets and liabilities related to an investment made in a prior year.

     During the first quarter of 2010, the Company recorded net restructuring charges of $3.1 related to severance payments and the closing of redundant and underutilized facilities. Of this amount, $3.9 related to severance and other employee costs for employees primarily in the affected facilities, and $0.6 related to contractual obligations associated with leased facilities and other facility related costs. The Company also reduced its prior facility related restructuring accruals by $1.4 as a result of incurring less cost than planned on those restructuring initiatives primarily due to favorable settlements on lease buyouts. In addition, the Company recorded a special charge of $6.2 related to the write-off of development costs incurred on systems abandoned during the quarter.

Interest Expense	Six Months Ended June 30,
	2011		2010		% Change
Interest expense	$	45.0	$	29.1		54.6	%

     The increase in interest expense was primarily due to interest incurred during 2011 in connection with proceeds from the senior notes offering of $925.0 in November 2010. Other interest related costs decreased due to lower average borrowings outstanding in the first six months of 2011 as compared with the 2010 period primarily due to principal payments on the Term Loan Facility and the settlement of approximately $149.1 of the zero-coupon subordinated notes in the first six months of 2011. In addition, the effective interest rate on the Term Loan Facility was lower in 2011 as compared with the 2010 period due to the expiration of the interest rate swap on March 31, 2011.

Equity Method Income	Six Months Ended June 30,
	2011		2010		% Change
Equity method income	$	4.1	$	8.4		(51.2	)%

      Equity method income represents the Company’s ownership share in joint venture partnerships along with stock investments in other companies in the clinical diagnostic industry. The decrease in income in the first six months of 2011 as compared with the 2010 period is primarily due to the Company’s share of losses in the Cincinnati, Ohio joint venture and the Canada, China and Western Europe equity method investment.

Income Tax Expense	Six Months Ended June 30,
	2011			2010			% Change
Income tax expense	$	163.7		$	189.7			(13.7	)%
Income tax expense as a %
of income before tax		38.9	%		39.3	%

24

     The decrease in the effective tax rate for 2011 as compared to 2010 was primarily the result of lower taxes on foreign earnings.

 LIQUIDITY AND CAPITAL RESOURCES (dollars and shares in millions)

     The Company’s operations provided $400.2 and $448.2 of cash, net of $0.0 and $16.6 in transition payments to UnitedHealthcare, for the six months ended June 30, 2011 and 2010, respectively. The decrease in cash flows in the first six months of 2011 is primarily due to the Company experiencing delays in billing for services rendered by Genzyme Genetics as a result of the normal post-acquisition enrollment process for government payers and the contract assignment process for managed care payers, along with the timing of vendor payments. Cash collections, receivable agings and DSO in the first six months of 2011 were negatively impacted by these delays. The Company expects the delays to be resolved in due course and the related billings and collections to be brought up-to-date during the third quarter of 2011. The Company's interest payments (primarily related to borrowings to fund the purchase of Genzyme Genetics) increased $15.2 during the first six months of 2011, compared to the first six months of 2010.

     Capital expenditures were $75.2 and $59.0 for the six months ended June 30, 2011 and 2010, respectively. The Company expects capital expenditures of approximately $150.0 in 2011. The Company will continue to make important investments in its business, including information technology. Such expenditures are expected to be funded by cash flow from operations, as well as borrowings under the Company’s revolving credit facilities as needed.

     The interest rate swap agreement to hedge variable interest rate risk on the Company’s variable interest rate term loan expired on March 31, 2011. On a quarterly basis under the swap, the Company paid a fixed rate of interest (2.92%) and received a variable rate of interest based on the three-month LIBOR rate on an amortizing notional amount of indebtedness equivalent to the term loan balance outstanding. The swap was designated as a cash flow hedge. Accordingly, the Company recognized the fair value of the swap in the condensed consolidated balance sheets and any changes in the fair value were recorded as adjustments to accumulated other comprehensive income (loss), net of tax. The fair value of the interest rate swap agreement was the estimated amount that the Company would have paid or received to terminate the swap agreement at the reporting date. The fair value of the swap was a liability of $2.4 at December 31, 2010 and was included in other liabilities in the respective condensed consolidated balance sheet.

     On October 28, 2010, in conjunction with the acquisition of Genzyme Genetics, the Company entered into a $925.0 Bridge Term Loan Credit Agreement, among the Company, the lenders named therein and Citibank, N.A., as administrative agent (the “Bridge Facility”). The Company replaced and terminated the Bridge Facility in November 2010 by making an offering in the debt capital markets. On November 19, 2010, the Company sold $925.0 in debt securities, consisting of $325.0 aggregate principal amount of 3.125% Senior Notes due May 15, 2016 and $600.0 aggregate principal amount of 4.625% Senior Notes due November 15, 2020. Beginning on May 15, 2011, interest on the Senior Notes due 2016 and 2020 is payable semi-annually on May 15 and November 15. On December 1, 2010, the acquisition of Genzyme Genetics was funded by the proceeds from the issuance of these Notes ($915.4) and with cash on hand.

     At June 30, 2011, the Company provided letters of credit aggregating approximately $37.3, primarily in connection with certain insurance programs. Letters of credit provided by the Company are secured by the Company’s senior credit facilities and are renewed annually, around mid-year.

     As of December 31, 2010, the Company had outstanding authorization from the Board of Directors to purchase approximately $234.3 of Company common stock. On February 10, 2011, the Company announced the Board of Directors authorized the purchase of $500.0 of additional shares of the Company’s common stock. During the six months ended June 30, 2011, the Company purchased approximately 3.5 shares of its common stock at a total cost of approximately $325.8. As of June 30, 2011, the Company had outstanding authorization from the Board of Directors to purchase approximately $408.5 of Company common stock.

     The Company had a $71.8 and $65.8 reserve for unrecognized income tax benefits, including interest and penalties, at June 30, 2011 and December 31, 2010, respectively. Substantially all of these tax reserves are classified in other long-term liabilities in the Company’s Condensed Consolidated Balance Sheets at June 30, 2011 and December 31, 2010, respectively.

     The Term Loan Facility and Revolving Facility contain certain debt covenants which require that the Company maintain a leverage ratio of no more than 2.5 to 1.0 and an interest coverage ratio of at least 5.0

25

to 1.0. Both ratios are calculated in relation to EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization). The credit agreement allows payment of dividends provided that the Company is not in default (as defined in the agreement) and its leverage ratio is less than 2.0 to 1.0. The Company was in compliance with all covenants as of June 30, 2011. As of June 30, 2011, the leverage and interest coverage ratios were 1.6 to 1.0 and 14.9 to 1.0, respectively. Based on current and projected levels of operations, coupled with availability under its senior credit facilities, the Company believes it has sufficient liquidity to meet both its anticipated short-term and long-term cash needs; however, the Company continually reassesses its liquidity position in light of market conditions and other relevant factors.

Zero-coupon Subordinated Notes

     During the six months ended June 30, 2011, the Company settled notices to convert approximately $183.2 aggregate principal amount at maturity of its zero-coupon subordinated notes with a conversion value of $240.7. The total cash used for these settlements was $149.1 and the Company also issued 0.9 additional shares of common stock. As a result of these conversions, the Company also reversed approximately $36.1 of deferred tax liability to reflect the tax benefit realized upon issuance of the shares.The zero-coupon subordinated notes are considered common stock equivalents and are included in the potentially diluted shares as disclosed in note 2 (Earnings Per Share) to the Company’s Unaudited Condensed Consolidated Financial Statements for the three and six months ended June 30, 2011 and 2010.

     On March 14, 2011, the Company announced that for the period of March 12, 2011 to September 11, 2011, the zero-coupon subordinated notes will accrue contingent cash interest at a rate of no less than 0.125% of the average market price of a zero-coupon subordinated note for the five trading days ended March 9, 2011, in addition to the continued accrual of the original issue discount.

     On July 1, 2011, the Company announced that its zero-coupon subordinated notes may be converted into cash and common stock at the conversion rate of 13.4108 per $1,000 principal amount at maturity of the notes, subject to the terms of the zero-coupon subordinated notes and the Indenture, dated as of October 24, 2006 between the Company and The Bank of New York Mellon, as trustee and conversion agent. In order to exercise the option to convert all or a portion of the zero-coupon subordinated notes, holders are required to validly surrender their zero-coupon subordinated notes at any time during the calendar quarter beginning July 1, 2011, through the close of business on the last business day of the calendar quarter, which is 5:00 p.m., New York City time, on Friday, September 30, 2011.

     The Company is required to offer to repurchase the zero-coupon subordinated notes on September 12, 2011, which is the last date on which the Company is currently obligated to make such an offer. The Company could receive additional notices of conversion prior to that date. If such notices are received, the Company plans to settle the cash portion of the conversion obligation with cash on hand and/or borrowings under the revolving credit facility.

Noncontrolling Interest Puts

     The partnership units of the holders of the noncontrolling interest in the Ontario, Canada (“Ontario”) joint venture were acquired by the Company on February 8, 2010 for $137.5. On February 17, 2010, the Company completed a transaction to sell the units acquired from the previous noncontrolling interest holder to a new Canadian partner for the same price. As a result of this transaction, the Company recorded a component of noncontrolling interest in other liabilities and a component in mezzanine equity. Upon the completion of these two transactions, the Company’s financial ownership percentage in the joint venture partnership remained unchanged at 85.6%. Concurrent with the sale to the new partner, the partnership agreement for the Ontario joint venture was amended and restated with substantially the same terms as the previous agreement. The combined contractual value of these puts, in excess of the current noncontrolling interest of $30.7, totals $144.1 at June 30, 2011. At June 30, 2011, $153.4 has been classified as a current liability in the Company’s condensed consolidated balance sheet as the noncontrolling interest that acquired these units has the ability to put its units in the partnership to the Company on December 31, 2011.

26

ITEM 3. Quantitative and Qualitative Disclosures about Market Risk

     The Company addresses its exposure to market risks, principally the market risk associated with changes in interest rates, through a controlled program of risk management that includes, from time to time, the use of derivative financial instruments such as interest rate swap agreements. Although, as set forth below, the Company’s zero-coupon subordinated notes contain features that are considered to be embedded derivative instruments, the Company does not hold or issue derivative financial instruments for trading purposes. The Company does not believe that its exposure to market risk is material to the Company’s financial position or results of operations.

     The Company’s zero-coupon subordinated notes contain the following two features that are considered to be embedded derivative instruments under authoritative guidance in connection with accounting for derivative instruments and hedging activities:

1)	The Company will pay contingent cash interest on the zero-coupon subordinated notes after September 11, 2006, if the average market price of the notes equals 120% or more of the sum of the issue price, accrued original issue discount and contingent additional principal, if any, for a specified measurement period.
2)	Holders may surrender zero-coupon subordinated notes for conversion during any period in which the rating assigned to the zero-coupon subordinated notes by Standard & Poor’s Ratings Services is BB- or lower.

     The Company’s Ontario, Canada consolidated joint venture operates in Canada and, accordingly, the earnings and cash flow generated from the Ontario operation are subject to foreign currency exchange risk.

     The Alberta, Canada joint venture partnership operates in Canada and remits the Company’s share of partnership income in Canadian dollars. Accordingly, the cash flow received from this affiliate is subject to foreign currency exchange risk.

ITEM 4. Controls and Procedures

     As of the end of the period covered by the Form 10-Q, the Company carried out, under the supervision and with the participation of the Company’s management, including the Company’s Chief Executive Officer and Chief Financial Officer, an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rules13-a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934). Based on the foregoing, the Company’s Chief Executive Officer and Chief Financial Officer concluded that the Company’s disclosure controls and procedures were effective as of June 30, 2011.

     There were no changes in the Company’s internal control over financial reporting that occurred during the quarter ended June 30, 2011 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

27

LABORATORY CORPORATION OF AMERICA HOLDINGS AND SUBSIDIARIES

PART II - OTHER INFORMATION

Item 1.	Legal Proceedings
	See Note 11 to the Company’s Unaudited Condensed Consolidated Financial Statements for the three and six months ended June 30, 2011, which is incorporated by reference.
Item 1A	Risk Factors
	The following risk factor is added to those that appear in Part I-Item 1A of the Company’s Annual Report on Form 10-K for the year ended December 31, 2010.
	The Company’s growing international operations could subject it to additional expenses and risks that could adversely impact the business or results of operations.
	The expansion of the Company’s international operations could subject it to additional expenses that the Company may not fully anticipate. The Company operates in a heavily regulated industry, and these expenses could include those related to enhanced time and resources necessary to comply with foreign laws and regulations that differ from those in the United States. International operations also expose the Company to additional risks, including:

· failure to comply with foreign laws and regulations that differ from those under which the Company operates in the United States;

· restrictions on currency repatriation;

· greater difficulty in collecting accounts receivable and longer collection periods;

· difficulties and costs of staffing and managing foreign operations;

· adverse changes in tax policies and other laws;

· procedures and actions affecting approval, production, pricing, reimbursement and marketing of products and services;

· less protection for intellectual property rights in some countries;

· judicial systems that less strictly enforce contractual rights;

· export controls and trade regulations; and

· natural disasters, epidemics, political instability and acts of war or terrorism.

     In some countries, the Company’s success will depend in part on its ability to form relationships with local partners. The Company’s inability to identify appropriate partners or reach mutually satisfactory arrangements could adversely affect the business and operations. International operations may result in increased expense and risk to the Company’s business and could give rise to unanticipated liabilities or difficulties that could adversely affect its operations and financial results.

28

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds (Shares and dollars in millions, except per share data)

      The following table sets forth information with respect to purchases of shares of the Company’s common stock made during the three months ended June 30, 2011, by or on behalf of the Company:

							Maximum
					Total Number		Dollar Value
			Average		of Shares		of Shares
	Total		Price		Repurchased as		that May Yet Be
	Number		Paid		Part of Publicly		Repurchased
	of Shares		Per		Announced		Under
	Repurchased		Share		Program		the Program
April 1 – April 30		0.2	$	94.71		0.2	$	449.0
May 1 – May 31		0.2		98.43		0.2		430.5
June 1 - June 30		0.2		96.41		0.2		408.5
		0.6	$	96.44		0.6

     At January 1, 2007, the Company had authorization to repurchase up to $350.0 of shares of the Company’s common stock ($100.0 authorized on April 21, 2005 and $250.0 authorized on October 20, 2006). On March 9, 2007, the Company announced the Board of Directors authorized the purchase of up to $500.0 of additional shares of the Company’s common stock. On November 2, 2007, the Company announced the Board of Directors authorized the purchase of up to $500.0 of additional shares of the Company’s common stock. On August 10, 2009, the Company announced the Board of Directors authorized the purchase of up to $250.0 of additional shares of the Company’s common stock. On February 11, 2010, the Company announced the Board of Directors authorized the purchase of up to $250.0 of additional shares of the Company’s common stock. On August 9, 2010, the Company announced the Board of Directors authorized the purchase of up to $250.0 of additional shares of the Company’s common stock. On February 10, 2011, the Company announced the Board of Directors authorized the purchase of up to $500.0 of additional shares of the Company’s common stock. As of June 30, 2011, the Company had outstanding authorization from the Board of Directors to purchase approximately up to $408.5 of Company common stock. The repurchase authorization has no expiration date. 

29

Item 6.	Exhibits
(a)	Exhibits
12.1*	Ratio of earnings to fixed charges
31.1*	Certification by the Chief Executive Officer pursuant to Rule 13a-14(a) or Rule 15d-14(a)
31.2*	Certification by the Chief Financial Officer pursuant to Rule 13a-14(a) or Rule 15d-14(a)
32*	Written Statement of Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350)
101.INS*	XBRL Instance Document
101.SCH*	XBRL Taxonomy Extension Schema
101.CAL*	XBRL Taxonomy Extension Calculation Linkbase
101.DEF*	XBRL Taxonomy Extension Definition Linkbase
101.LAB*	XBRL Taxonomy Extension Label Linkbase
101.PRE*	XBRL Taxonomy Extension Presentation Linkbase

* filed herewith

30

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

LABORATORY CORPORATION OF AMERICA HOLDINGS

Registrant

By:	/s/ DAVID P. KING
	David P. King
	Chairman of the Board, President
	and Chief Executive Officer

By:	/s/ WILLIAM B. HAYES
	William B. Hayes
	Executive Vice President,
	Chief Financial Officer and Treasurer

July 29, 2011

31

EX-12.1

											EXHIBIT 12.1
STATEMENT OF COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES
(dollars in millions, except ratio information)
	Fiscal Years Ended December 31,										Six Months Ended
	2006		2007		2008		2009		2010		June 30, 2011
Income from continuing operations
before income taxes		720.9		802.3		785.7		884.6		915.6		421.0
Fixed Charges:
Interest on long-term and
short-term debt including
amortization of debt expense		47.8		56.6		72.0		62.9		70.0		45.0
Portion of rental expense as can be
demonstrated to be representative
of the interest factor		43.6		53.0		58.4		61.0		67.4		37.1
Total fixed charges		91.4		109.6		130.4		123.9		137.4		82.1
Earnings before income taxes and
fixed charges		812.3		911.9		916.1		1,008.5		1,053.0		503.1
Ratio of earnings to fixed charges		8.89		8.32		7.03		8.14		7.66		6.13

EX-31.1

Exhibit 31.1

Certification

I, David P. King, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Laboratory Corporation of America Holdings;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;  and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 29, 2011
	By:	/s/ DAVID P. KING
		David P. King
		Chief Executive Officer
		(Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification

I, William B. Hayes, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Laboratory Corporation of America Holdings;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rule 13a-15(f) and 15d-15(f)) for the registrant and have:

a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation;  and

d) disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date: July 29, 2011
	By:	/s/ WILLIAM B. HAYES
		William B. Hayes
		Chief Financial Officer
		(Principal Financial Officer)

EX-32

Exhibit 32

Written Statement of

Chief Executive Officer and Chief Financial Officer

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350)

     The undersigned, the Chief Executive Officer and the Chief Financial Officer of Laboratory Corporation of America Holdings (the “Company”), each hereby certifies that, to his knowledge on the date hereof:

     (a)  the Form 10-Q of the Company for the Period Ended June 30, 2011 filed on the date hereof with the Securities and Exchange Commission (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

     (b)  information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

By:	/s/ DAVID P. KING
	David P. King
	Chief Executive Officer
	July 29, 2011

By:	/s/ WILLIAM B. HAYES
	William B. Hayes
	Chief Financial Officer
	July 29, 2011

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Allowance for doubtful accounts	$ 185.5	$ 149.2
Shareholders' equity
Common stock, shares outstanding (in shares)	101.4	102.4

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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income Statement [Abstract]
Net sales	$ 1,403.3	$ 1,238.4	$ 2,771.7	$ 2,432.0
Cost of sales	815.1	704.8	1,615.1	1,391.5
Gross profit	588.2	533.6	1,156.6	1,040.5
Selling, general and administrative expenses	322.7	245.4	605.5	491.4
Amortization of intangibles and other assets	21.5	17.7	43.4	35.1
Restructuring and other special charges	18.3	0	46.2	9.3
Operating income	225.7	270.5	461.5	504.7
Other income (expenses):
Interest expense	(21.0)	(14.5)	(45.0)	(29.1)
Equity method income, net	2.6	4.6	4.1	8.4
Investment income	0.2	0.2	0.5	0.5
Other, net	(0.2)	(0.8)	(0.1)	(1.4)
Earnings before income taxes	207.3	260.0	421.0	483.1
Provision for income taxes	80.6	102.8	163.7	189.7
Net earnings	126.7	157.2	257.3	293.4
Less: Net earnings attributable to the noncontrolling interest	(3.8)	(3.5)	(7.3)	(7.0)
Net earnings attributable to Laboratory Corporation of America Holdings	$ 122.9	$ 153.7	$ 250.0	$ 286.4
Basic earnings per common share	$ 1.22	$ 1.48	$ 2.49	$ 2.75
Diluted earnings per common share	$ 1.20	$ 1.46	$ 2.44	$ 2.70

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EARNINGS PER SHARE (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Reconciliation of Basic Earnings Per Share to Diluted Earnings Per Share Table

The following represents a reconciliation of basic earnings per share to diluted earnings per share:

	Three Months Ended June 30,												Six Months Ended June 30,
			2011						2010						2011						2010
					Per						Per						Per						Per
					Share						Share						Share						Share
	Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount
Basic earnings
per share:
Net earnings	$	122.9		100.6	$	1.22	$	153.7		103.5	$	1.48	$	250.0		100.4	$	2.49	$	286.4		104.0	$	2.75
Dilutive effect of
employee  stock
options and awards		--		1.3				--		0.9				--		1.3				--		0.9
Effect of convertible
debt, net of tax		--		0.9				--		1.0				--		0.9				--		1.0
Diluted earnings
per share:
Net earnings
including impact of
dilutive adjustments	$	122.9		102.8	$	1.20	$	153.7		105.4	$	1.46	$	250.0		102.6	$	2.44	$	286.4		105.9	$	2.70

Potential Common Shares Not Included in Computation of Diluted Earnings Per Share Table

    The following table summarizes the potential common shares not included in the computation of diluted earnings per share because their impact would have been antidilutive:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Stock options		1.4		2.8		1.2		4.0

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Document And Entity Information (USD $) In Billions, except Share data	6 Months Ended
	Jun. 30, 2011	Jul. 21, 2011	Jun. 30, 2010
Entity Registrant Name	LABORATORY CORP OF AMERICA HOLDINGS
Entity Central Index Key	0000920148
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float			$ 7.8
Entity Common Stock, Shares Outstanding		101,400,000
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q2
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2011

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DEBT (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Short-term borrowings and current portion of long-term debt

     Short-term borrowings and the current portion of long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Zero-coupon convertible subordinated notes	$	140.1	$	286.7
Term loan, current		75.0		75.0
Total short-term borrowings and current portion
of long-term debt	$	215.1	$	361.7

Long-term debt

     Long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Senior notes due 2013	$	350.7	$	350.9
Senior notes due 2015		250.0		250.0
Senior notes due 2016		325.0		325.0
Senior notes due 2020		600.0		600.0
Term loan, non-current		262.5		300.0
Other long-term debt		--		0.8
Total long-term debt	$	1,788.2	$	1,826.7

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RESTRUCTURING RESERVES

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

RESTRUCTURING RESERVES

6.  RESTRUCTURING RESERVES

The following represents the Company's restructuring activities for the period indicated:

	Severance			Lease
	and Other			and Other
	Employee			Facility
	Costs			Costs			Total
Balance as of December 31, 2010	$	4.9		$	12.9		$	17.8
Restructuring charges		13.3			13.8			27.1
Reduction of prior restructuring accruals		(2.4	)		(0.5	)		(2.9	)
Cash payments and other adjustments		(6.4	)		(3.9	)		(10.3	)
Balance as of June 30, 2011	$	9.4		$	22.3		$	31.7
Current							$	19.0
Non-current								12.7
							$	31.7

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PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Changes in common shares issued and held in treasury

     The changes in common shares issued and held in treasury are summarized below:

				Held in
	Issued			Treasury			Outstanding
Common shares at December 31, 2010		124.5			(22.1	)		102.4
Common stock issued under employee stock plans		1.7			--			1.7
Common stock issued upon conversion of zero-coupon
subordinated notes		0.9			--			0.9
Surrender of restricted stock and performance share awards		--			(0.1	)		(0.1	)
Retirement of common stock		(3.5	)		--			(3.5	)
Common shares at June 30, 2011		123.6			(22.2	)		101.4

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FAIR VALUE MEASUREMENTS (Details) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	$ 174.8	$ 168.7
Derivatives
Embedded derivatives related to the zero -coupon subordinated notes	0	0
Interest rate swap liability	0	2.4
Total fair value of derivatives	0	2.4
Fair market value of zero-coupon subordinated notes	222.6	419.5
Fair market value of senior notes	1,594.8	1,549.8
Fair market value of variable rate debt	336.1	370.1
Level 1 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0	0
Derivatives
Embedded derivatives related to the zero -coupon subordinated notes	0	0
Interest rate swap liability	0	0
Total fair value of derivatives	0	0
Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	174.8	168.7
Derivatives
Embedded derivatives related to the zero -coupon subordinated notes	0	0
Interest rate swap liability	0	2.4
Total fair value of derivatives	0	2.4
Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0	0
Derivatives
Embedded derivatives related to the zero -coupon subordinated notes	0	0
Interest rate swap liability	0	0
Total fair value of derivatives	$ 0	$ 0

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DEBT (Details) (USD $) Share data in Millions, unless otherwise specified	0 Months Ended	6 Months Ended
	Mar. 09, 2011	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Schedule of short-term debt instruments
Zero-coupon convertible subordinated notes		$ 140,100,000		$ 286,700,000
Term loan, current		75,000,000		75,000,000
Total short-term borrowings and current portion of long-term debt		215,100,000		361,700,000
Long-term debt by instrument [Abstract]
Long-term debt		1,788,200,000		1,826,700,000
Zero-coupon Subordinated Notes
Principal amount at maturity of zero-coupon subordinated notes converted		183,200,000
Cash used for zero-coupon subordinated notes conversions		149,100,000	4,300,000
Common stock issued upon conversion of zero-coupon subordinated notes (in shares)		0.9
Value of cash and common stock in connection with conversions of zero-coupon subordinated notes, settled in current period		240,700,000
Tax benefit realized in connection with common stock issued upon conversion of zero-coupon subordinated notes		36,100,000
Minimum contingent cash interest rate on zero-coupon subordinated notes (in hundredths)		0.125%
Number of trading days used to establish contingent cash interest rate on zero-coupon subordinated notes (in days)	5
Announcement date that zero-coupon subordinated notes may be converted into cash and common stock at the stock conversion rate		Jul. 01, 2011
Date of the terms for the zero-coupon subordinated notes and indenture		Oct. 24, 2006
Zero-coupon subordinated notes exercise period, beginning		Jul. 01, 2011
Zero-coupon subordinated notes exercise period, ending		Sep. 30, 2011
Stock conversion rate for zero-coupon subordinated notes (per thousand)		13.4108
Principal amount of zero-coupon subordinated notes		1,000
Credit Facilities
Outstanding balance on the Term Loan Facility		337,500,000		375,000,000
Revolving credit facility		0		0
Debt covenants, maximum leverage ratio		2.5 to 1.0
Debt covenants, minimum interest coverage ratio		5.0 to 1.0
Debt covenants, maximum leverage ratio before dividend payout		2.0 to 1.
Leverage ratio		1.6 to 1.0
Interest coverage ratio		14.9 to 1.0
Debt covenant compliance		in compliance
Effective interest rate on Term Loan Facility (in hundredths)		0.87%
Effective interest rate on Revolving Facility (in hundredths)		0.54%
Senior notes due 2013 [Member]
Long-term debt by instrument [Abstract]
Long-term debt		350,700,000		350,900,000
Maturity date		Jan. 31, 2013
Senior notes due 2015 [Member]
Long-term debt by instrument [Abstract]
Long-term debt		250,000,000		250,000,000
Maturity date		Dec. 15, 2015
Senior notes due 2016 [Member]
Long-term debt by instrument [Abstract]
Long-term debt		325,000,000		325,000,000
Maturity date		May 15, 2016
Senior notes due 2020 [Member]
Long-term debt by instrument [Abstract]
Long-term debt		600,000,000		600,000,000
Maturity date		Nov. 15, 2020
Term loan, non-current [Member]
Long-term debt by instrument [Abstract]
Long-term debt		262,500,000		300,000,000
Other long-term debt [Member]
Long-term debt by instrument [Abstract]
Long-term debt		$ 0		$ 800,000

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GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Changes in Carrying Amount of Goodwill Table

     The changes in the carrying amount of goodwill for the six-month period ended June 30, 2011 and for the year ended December 31, 2010 are as follows:

	June 30,			December 31,
	2011			2010
Balance as of January 1	$	2,601.3		$	1,897.1
Goodwill acquired during the period		44.2			704.4
Adjustments to goodwill		(1.2	)		(0.2	)
Balance at end of period	$	2,644.3		$	2,601.3

Components of identifiable intangibles assets Table

The components of identifiable intangible assets are as follows:

	June 30, 2011					December 31, 2010
	Gross					Gross
	Carrying		Accumulated			Carrying		Accumulated
	Amount		Amortization			Amount		Amortization
Customer relationships	$	1,163.3	$	(399.1	)	$	1,146.0	$	(370.0	)
Patents, licenses and technology		144.7		(82.0	)		144.7		(75.7	)
Non-compete agreements		28.0		(12.1	)		26.6		(9.4	)
Trade name		123.5		(55.6	)		123.3		(50.3	)
Canadian licenses		765.3		--			738.9		--
	$	2,224.8	$	(548.8	)	$	2,179.5	$	(505.4	)

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

COMMITMENTS AND CONTINGENCIES

11. COMMITMENTS AND CONTINGENCIES

     The Company is involved in a number of judicial, regulatory, and arbitration proceedings (including those described below) concerning matters arising in connection with the conduct of the Company's business activities. Many of these proceedings are at preliminary stages, and many of these cases seek an indeterminate amount of damages.

     The Company records an aggregate legal reserve, which is determined using actuarial calculations around historical loss rates and assessment of trends experienced in settlements and defense costs. In accordance with ASC 450 “Contingencies”, the Company establishes reserves for judicial, regulatory, and arbitration matters outside the aggregate legal reserve if and when those matters present loss contingencies that are both probable and estimable and would exceed the aggregate legal reserve.  When loss contingencies are not both probable and estimable, the Company does not establish separate reserves.

     Management is unable to estimate a range of reasonably possible loss for cases described below in which damages either have not been specified or, in management's judgment, are unsupported and/or exaggerated and (i) the proceedings are in early stages; (ii) there is uncertainty as to the outcome of pending appeals or motions; (iii) there are significant factual issues to be resolved; and/or (iv) there are novel legal issues to be presented. For these cases, however, management does not believe, based on currently available information, that the outcomes of these proceedings will have a material adverse effect on the Company's financial condition, though the outcomes could be material to the Company's operating results for any particular period, depending, in part, upon the operating results for such period.

     A subsidiary of the Company, DIANON Systems, Inc. (“DIANON”), is the appellant in a wrongful termination lawsuit originally filed by G. Berry Schumann in Superior Court in the State of Connecticut.  After a jury trial, the state court entered judgment against DIANON, with total damages, attorney's fees, and pre-judgment interest payable by DIANON, of approximately $10.0. DIANON filed a notice ofappeal in December 2009, and the case has been transferred to the Connecticut Supreme Court. The Court heard oral argument on May 18, 2011 and the parties await the Court's decision on DIANON's appeal.

     As previously reported on July 14, 2011, the Company reached an agreement in principle to settle the previously disclosed lawsuit, California ex rel. Hunter Laboratories, LLC et al. v. Quest Diagnostics Incorporated, et al., to avoid the uncertainty and costs associated with prolonged litigation. The original lawsuit was brought against the Company and several other major laboratories operating in California and alleged that the defendants improperly billed the state Medicaid program and, therefore, violated the California False Claims Act. The original complaint was dismissed on the basis of (i) misjoinder and (ii) lack of particularity in the claims and a separate amended complaint was filed against the Company on December 14, 2009. The complaint against the Company sought a refund of alleged overpayments made to the Company from November 7, 1995 through November 2009, plus simple interest of 7% per year, calculated as of the filing date to total $97.5. In addition, the suit sought continuing damages past November 2009 plus treble damages, civil penalties of $0.01 per each alleged false claim, recovery of costs, attorney's fees, and legal expenses, and pre- and post-judgment interest. The Company filed an answer to the new Complaint on February 5, 2010. Pursuant to the settlement in principle, the Company will pay $49.5 to resolve all claims brought against the Company in the lawsuit without any admission of liability. As a result of the settlement in principle, the Company recorded litigation settlement expense of $34.5 (net of a previously recorded reserve of $15.0) in the second quarter of 2011. The settlement is subject to the negotiation and execution of a Settlement Agreement and Release.

     In addition, the Company has received three other subpoenas since 2007 related to Medicaid billing. In June 2010, the Company received a subpoena from the State of Florida requesting documents related to its billing to Florida Medicaid. In February 2009, the Company received a subpoena from the Commonwealth of Virginia seeking documents related to the Company's billing for state Medicaid. In October 2009, the Company received a subpoena from the State of Michigan seeking documents related to its billing to Michigan Medicaid. The Company also responded to an October 2007 subpoena from the United States Office of Inspector General's regional office in New York and a September 2009 subpoena from the United States Office of Inspector General's regional office in Massachusetts regarding certain of its billing practices. The Company is cooperating with the requests.

     On August 19, 2010, Aetna, Inc., Aetna Health Holdings, LLC and Aetna Health Management, LLC filed a lawsuit against Laboratory Corporation of America Holdings in the United States District Court for the Eastern District of Pennsylvania, alleging unfair competition, misrepresentation, interference and breach of contract, and violation of trade secret laws. Aetna is seeking unspecified monetary damages and equitable relief. The Company filed a motion to dismiss the complaint and the Court issued an order dismissing the case on May 26, 2011. On June 6, 2011, the Plaintiffs filed a motion for reconsideration of the Court's ruling, and on July 18, 2011, the Court issued an order denying the motion.

     The Company is involved from time to time in various claims and legal actions, including arbitrations, class actions, and other litigation, arising in the ordinary course of business. Some of these actions involve claims that are substantial in amount. These matters include, but are not limited to, intellectual property disputes, professional liability, employee related matters, and inquiries, including subpoenas and other civil investigative demands, from governmental agencies and Medicare or Medicaid payers and managed care payers reviewing billing practices or requesting comment on allegations of billing irregularities that are brought to their attention through billing audits or third parties. The Company works cooperatively to respond to appropriate requests for information.

     The Company is also named from time to time in suits brought under the qui tam provisions of the False Claims Act and comparable state laws. These suits typically allege that the Company has made false statements and/or certifications in connection with claims for payment from federal or state health care programs. They may remain under seal (hence, unknown to the Company) for some time while the government decides whether to intervene on behalf of the qui tam plaintiff. Such claims are an inevitable part of doing business in the health care field today.

     The Company believes that it is in compliance in all material respects with all statutes, regulations and other requirements applicable to its clinical laboratory operations. The clinical laboratory testing industry is, however, subject to extensive regulation, and the courts have not interpreted many of these statutes and regulations. There can be no assurance therefore that those applicable statutes and regulations will not be interpreted or applied by a prosecutorial, regulatory or judicial authority in a manner that would adversely affect the Company. Potential sanctions for violation of these statutes and regulations include significant fines and the loss of various licenses, certificates and authorizations.

     Under the Company's present insurance programs, coverage is obtained for catastrophic exposure as well as those risks required to be insured by law or contract. The Company is responsible for the uninsured portion of losses related primarily to general, professional and vehicle liability, certain medical costs and workers' compensation. The self-insured retentions are on a per occurrence basis without any aggregate annual limit. Provisions for losses expected under these programs are recorded based upon the Company's estimates of the aggregated liability of claims incurred. At June 30, 2011, the Company had provided letters of credit aggregating approximately $37.3, primarily in connection with certain insurance programs. The Company's availability under its Revolving Facility is reduced by the amount of these letters of credit.

At June 30, 2011, the Company was a guarantor on approximately $1.0 of equipment leases. These leases were entered into by a joint venture in which the Company owns a 50% interest and have a remaining term of approximately one year.

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EARNINGS PER SHARE

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

EARNINGS PER SHARE

2.  EARNINGS PER SHARE

     Basic earnings per share is computed by dividing net earnings by the weighted average number of common shares outstanding. Diluted earnings per share is computed by dividing net earnings including the impact of dilutive adjustments by the weighted average number of common shares outstanding plus potentially dilutive shares, as if they had been issued at the earlier of the date of issuance or the beginning of the period presented. Potentially dilutive common shares result primarily from the Company's outstanding stock options, restricted stock awards, performance share awards, and shares issuable upon conversion of zero-coupon subordinated notes.

     The following represents a reconciliation of basic earnings per share to diluted earnings per share:

	Three Months Ended June 30,												Six Months Ended June 30,
			2011						2010						2011						2010
					Per						Per						Per						Per
					Share						Share						Share						Share
	Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount		Income		Shares		Amount
Basic earnings
per share:
Net earnings	$	122.9		100.6	$	1.22	$	153.7		103.5	$	1.48	$	250.0		100.4	$	2.49	$	286.4		104.0	$	2.75
Dilutive effect of
employee  stock
options and awards		--		1.3				--		0.9				--		1.3				--		0.9
Effect of convertible
debt, net of tax		--		0.9				--		1.0				--		0.9				--		1.0
Diluted earnings
per share:
Net earnings
including impact of
dilutive adjustments	$	122.9		102.8	$	1.20	$	153.7		105.4	$	1.46	$	250.0		102.6	$	2.44	$	286.4		105.9	$	2.70

     The following table summarizes the potential common shares not included in the computation of diluted earnings per share because their impact would have been antidilutive:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2011		2010		2011		2010
Stock options		1.4		2.8		1.2		4.0

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RESTRUCTURING AND OTHER SPECIAL CHARGES (Details) (USD $) In Millions	3 Months Ended	6 Months Ended
	Mar. 31, 2010	Jun. 30, 2011
Notes To Financial Statements [Abstract]
Net restructuring charges	$ 3.1	$ 24.2
Restructuring charges related to severance and other employee costs	3.9	13.3
Reduction of prior restructuring accruals		2.9
Restructuring charges related to contractual obligations associated with leased facilities and other facility related costs	0.6	13.8
Reduction in prior facility related restructuring accruals	1.4
Special charge related to write-off	6.2	14.8
Fixed assets impairment charges primarily related to equipment and leasehold improvement in closed facilities		$ 7.2

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DEBT

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

DEBT

8.  DEBT

     Short-term borrowings and the current portion of long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Zero-coupon convertible subordinated notes	$	140.1	$	286.7
Term loan, current		75.0		75.0
Total short-term borrowings and current portion
of long-term debt	$	215.1	$	361.7

     Long-term debt at June 30, 2011 and December 31, 2010 consisted of the following:

	June 30,		December 31,
	2011		2010
Senior notes due 2013	$	350.7	$	350.9
Senior notes due 2015		250.0		250.0
Senior notes due 2016		325.0		325.0
Senior notes due 2020		600.0		600.0
Term loan, non-current		262.5		300.0
Other long-term debt		--		0.8
Total long-term debt	$	1,788.2	$	1,826.7

Zero-coupon Subordinated Notes

     During the six months ended June 30, 2011, the Company settled notices to convert approximately $183.2 aggregate principal amount at maturity of its zero-coupon subordinated notes with a conversion value of $240.7. The total cash used for these settlements was $149.1 and the Company also issued 0.9 additional shares of common stock. As a result of these conversions, the Company also reversed approximately $36.1 of deferred tax liability to reflect the tax benefit realized upon issuance of the shares. The Company's zero-coupon subordinated notes are considered common stock equivalents and are included in the potentially diluted shares as disclosed in footnote 2. Earnings Per Share.

     On March 14, 2011, the Company announced that for the period of March 12, 2011 to September 11, 2011, the zero-coupon subordinated notes will accrue contingent cash interest at a rate of no less than 0.125% of the average market price of a zero-coupon subordinated note for the five trading days ended March 9, 2011, in addition to the continued accrual of the original issue discount.

     On July 1, 2011, the Company announced that its zero-coupon subordinated notes may be converted into cash and common stock at the conversion rate of 13.4108 per $1,000 principal amount at maturity of the notes, subject to the terms of the zero-coupon subordinated notes and the Indenture, dated as of October 24, 2006 between the Company and The Bank of New York Mellon, as trustee and conversion agent. In order to exercise the option to convert all or a portion of the zero-coupon subordinated notes, holders are required to validly surrender their zero-coupon subordinated notes at any time during the calendar quarter beginning July 1, 2011, through the close of business on the last business day of the calendar quarter, which is 5:00 p.m., New York City time, on Friday, September 30, 2011.

Credit Facilities

    The balances outstanding on the Company's Term Loan Facility at June 30, 2011 and December 31, 2010 were $337.5 and $375.0, respectively. There were no balances outstanding on the Company's Revolving Facility at June 30, 2011 and December 31, 2010. The Term Loan Facility and Revolving Facility bear interest at varying rates based upon LIBOR plus a percentage based on the Company's credit rating with Standard & Poor's Ratings Services. The Term Loan Facility and Revolving Facility contain certain debt covenants which require that the Company maintain a leverage ratio of no more than 2.5 to 1.0 and an interest coverage ratio of at least 5.0 to 1.0. Both ratios are calculated in relation to EBITDA (Earnings Before Interest, Taxes, Depreciation, and Amortization). The credit agreement allows payment of dividends provided that the Company is not in default (as defined in the agreement) and its leverage ratio is less than 2.0 to 1.0. The Company was in compliance with all covenants as of June 30, 2011. As of June 30, 2011, the leverage and interest coverage ratios were 1.6 to 1.0 and 14.9 to 1.0, respectively.

     As of June 30, 2011, the effective interest rates on the Term Loan Facility and Revolving Facility were 0.87% and 0.54%, respectively.

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FAIR VALUE MEASUREMENTS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

FAIR VALUE MEASUREMENTS

13. FAIR VALUE MEASUREMENTS

     The Company's population of financial assets and liabilities subject to fair value measurements as of June 30, 2011 and December 31, 2010 are as follows:

	Fair value		Fair Value Measurements as of
	as of		June 30, 2011
	June 30,		Using Fair Value Hierarchy
	2011		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	174.8	$	--	$	174.8	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		--		--		--		--
Total fair value of derivatives	$	--	$	--	$	--	$	--

	Fair value		Fair Value Measurements as of
	as of		December 31, 2010
	December 31,		Using Fair Value Hierarchy
	2010		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	168.7	$	--	$	168.7	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		2.4		--		2.4		--
Total fair value of derivatives	$	2.4	$	--	$	2.4	$	--

     The noncontrolling interest puts are valued at their contractually determined values, which approximate fair values. The fair values for the embedded derivatives and interest rate swap are based on observable inputs or quoted market prices from various banks for similar instruments.

     The carrying amounts of cash and cash equivalents, accounts receivable, income taxes receivable, and accounts payable are considered to be representative of their respective fair values due to their short-term nature. The fair market value of the zero-coupon subordinated notes, based on market pricing, was approximately $222.6 and $419.5 as of June 30, 2011 and December 31, 2010, respectively. The fair market value of the senior notes, based on market pricing, was approximately $1,594.8 and $1,549.8 as of June 30, 2011 and December 31, 2010, respectively. As of June 30, 2011 and December 31, 2010, theestimated fair market value of the Company's variable rate debt of $336.1 and $370.1, respectively, was estimated by calculating the net present value of related cash flows, discounted at current market rates.

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PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY

9. PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY

     The Company is authorized to issue up to 265.0 shares of common stock, par value $0.10 per share. The Company's treasury shares are recorded at aggregate cost. The Company is authorized to issue up to 30.0 shares of preferred stock, par value $0.10 per share. There were no preferred shares outstanding as of June 30, 2011.

     The changes in common shares issued and held in treasury are summarized below:

				Held in
	Issued			Treasury			Outstanding
Common shares at December 31, 2010		124.5			(22.1	)		102.4
Common stock issued under employee stock plans		1.7			--			1.7
Common stock issued upon conversion of zero-coupon
subordinated notes		0.9			--			0.9
Surrender of restricted stock and performance share awards		--			(0.1	)		(0.1	)
Retirement of common stock		(3.5	)		--			(3.5	)
Common shares at June 30, 2011		123.6			(22.2	)		101.4

Share Repurchase Program

     As of December 31, 2010, the Company had outstanding authorization from the Board of Directors to purchase approximately $234.3 of Company common stock. On February 10, 2011, the Company announced the Board of Directors authorized the purchase of $500.0 of additional shares of the Company's common stock. During the six months ended June 30, 2011, the Company purchasedapproximately 3.5 shares of its common stock at a total cost of approximately $325.8. As of June 30, 2011, the Company had outstanding authorization from the Board of Directors to purchase approximately $408.5 of Company common stock.

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BASIS OF FINANCIAL STATEMENT PRESENTATION (Details)	6 Months Ended
	Jun. 30, 2011
Notes To Financial Statements [Abstract]
Ownership percentage below which investments are generally accounted for on the cost method (in hundredths)	20.00%

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GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

GOODWILL AND INTANGIBLE ASSETS

7.  GOODWILL AND INTANGIBLE ASSETS

     The changes in the carrying amount of goodwill for the six-month period ended June 30, 2011 and for the year ended December 31, 2010 are as follows:

	June 30,			December 31,
	2011			2010
Balance as of January 1	$	2,601.3		$	1,897.1
Goodwill acquired during the period		44.2			704.4
Adjustments to goodwill		(1.2	)		(0.2	)
Balance at end of period	$	2,644.3		$	2,601.3

The components of identifiable intangible assets are as follows:

	June 30, 2011					December 31, 2010
	Gross					Gross
	Carrying		Accumulated			Carrying		Accumulated
	Amount		Amortization			Amount		Amortization
Customer relationships	$	1,163.3	$	(399.1	)	$	1,146.0	$	(370.0	)
Patents, licenses and technology		144.7		(82.0	)		144.7		(75.7	)
Non-compete agreements		28.0		(12.1	)		26.6		(9.4	)
Trade name		123.5		(55.6	)		123.3		(50.3	)
Canadian licenses		765.3		--			738.9		--
	$	2,224.8	$	(548.8	)	$	2,179.5	$	(505.4	)

     Amortization of intangible assets for the six month and three month periods ended June 30, 2011 was $43.4 and $21.5, respectively, and $35.1 and $17.7 for the six month and three month periods ended June 30, 2010, respectively. Amortization expense for the net carrying amount of intangible assets is estimated to be $42.7 for the remainder of fiscal 2011, $81.8 in fiscal 2012, $76.2 in fiscal 2013, $73.4 in fiscal 2014, $69.8 in fiscal 2015 and $566.8 thereafter.

     The Ontario operation had $765.3 and $738.9 of value assigned to the partnership's indefinite lived Canadian licenses to conduct diagnostic testing services in the province as of June 30, 2011 and December 31, 2010, respectively.

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 257.3	$ 293.4
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	115.9	100.1
Stock compensation	25.5	19.4
Loss on sale of assets	0.4	1.3
Accreted interest on zero-coupon subordinated notes	2.5	2.9
Cumulative earnings less than distribution from equity method investments	0.4	0
Deferred income taxes	(19.5)	3.5
Change in assets and liabilities (net of effects of acquisitions):
Increase in accounts receivable (net)	(58.4)	(37.0)
(Increase) decrease in inventories	(2.7)	3.8
Decrease in prepaid expenses and other	24.7	11.0
Increase (decrease) in accounts payable	(57.3)	9.1
Increase in accrued expenses and other	111.4	40.7
Net cash provided by operating activities	400.2	448.2
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(75.2)	(59.0)
Proceeds from sale of assets	3.1	2.4
Deferred payments on acquisitions	(0.2)	(2.0)
Acquisition of licensing technology	0	(0.4)
Acquisition of businesses, net of cash acquired	(45.0)	(174.9)
Net cash used for investing activities	(117.3)	(233.9)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from revolving credit facilities	85.0	95.0
Payments on revolving credit facilities	(85.0)	(140.0)
Principal payments on term loan	(37.5)	(25.0)
Payments on zero-coupon subordinated notes	(149.1)	(4.3)
Payments on vendor-financed equipment	0	(1.3)
Increase in bank overdraft	6.0	0
Payments on long-term debt	(0.8)	0
Payment of debt issuance costs	(0.5)	0
Proceeds from sale of interest in a consolidated subsidiary	0	137.5
Cash paid to acquire an interest in a consolidated subsidiary	0	(137.5)
Noncontrolling interest distributions	(2.7)	(5.8)
Excess tax benefits from stock based compensation	9.6	2.5
Net proceeds from issuance of stock to employees	102.9	36.7
Purchase of common stock	(322.8)	(216.2)
Net cash used for financing activities	(394.9)	(258.4)
Effect of exchange rate changes on cash and cash equivalents	0.2	(0.6)
Net decrease in cash and cash equivalents	(111.8)	(44.7)
Cash and cash equivalents at beginning of period	230.7	148.5
Cash and cash equivalents at end of period	$ 118.9	$ 103.8

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NEW ACCOUNTING PRONOUNCEMENTS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

NEW ACCOUNTING PRONOUNCEMENTS

3. NEW ACCOUNTING PRONOUNCEMENTS

     In June 2011, the Financial Accounting Standards Board (“FASB”) issued authoritative guidance on the presentation of comprehensive income. Specifically, this literature allows an entity to present components of net earnings and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The authoritative guidance eliminates the current option to report other comprehensive income and its components in the statement of changes in shareholders' equity. While the authoritative guidance changes the presentation of comprehensive income, there are no changes to the components that are recognized in net earnings or other comprehensive income under current accounting guidance. The guidance is effective for fiscal years and interim periods beginning after December 15, 2011. The Company does not believe the adoption of the authoritative guidance in the first quarter of fiscal 2012 will have an impact on its consolidated financial position, results of operations or cash flows.

     In May 2011, the FASB issued authoritative guidance to achieve common fair value measurement and disclosure requirements between U.S. generally accepted accounting principles and International Financial Reporting Standards. This new literature amends current fair value measurement and disclosure guidance to include increased transparency around valuation inputs and investment categorization. The guidance is effective for fiscal years and interim periods beginning after December 15, 2011. The Company does not believe the adoption of the authoritative guidance in the first quarter of fiscal 2012 will have an impact on its consolidated financial statements.

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INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2011	Dec. 31, 2010
Notes To Financial Statements [Abstract]
Minimum threshold percentage required to recognize income tax benefit (in hundredths)	50.00%
Gross unrecognized income tax benefits	$ 57.9	$ 53.6
Unrecognized income tax benefits that would impact effective tax rate	58.9	54.6
Accrued interest and penalties related to unrecognized income tax benefits	$ 13.9	$ 12.2

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SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Supplemental schedule of cash flow information

SUPPLEMENTAL CASH FLOW INFORMATION

	Six Months Ended
	June 30,
	2011		2010
Supplemental schedule of cash flow information:
Cash paid during period for:
Interest	$	39.4	$	24.2
Income taxes, net of refunds		148.4		155.7
Disclosure of non-cash financing and investing activities:
Accrued repurchases of common stock	$	3.0	$	5.5

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NONCONTROLLING INTEREST PUTS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

NONCONTROLLING INTEREST PUTS

4.  NONCONTROLLING INTEREST PUTS

The partnership units of the holders of the noncontrolling interest in the Ontario, Canada ("Ontario") joint venture were acquired by the Company on February 8, 2010 for $137.5. On February 17, 2010, the Company completed a transaction to sell the units acquired from the previous noncontrolling interest holder to a new Canadian partner for the same price. As a result of this transaction, the Company recorded a component of noncontrolling interest in other liabilities and a component in mezzanine equity. Upon the completion of these two transactions, the Company's financial ownership percentage in the joint venture partnership remained unchanged at 85.6%. Concurrent with the sale to the new partner, the partnership agreement for the Ontario joint venture was amended and restated with substantially the same terms as the previous agreement. The combined contractual value of these puts, in excess of the current noncontrolling interest of $30.7, totals $144.1 at June 30, 2011. At June 30, 2011, $153.4 has been classified as a current liability in the Company's condensed consolidated balance sheet as the noncontrolling interest that acquired these units has the ability to put its units in the partnership to the Company on December 31, 2011.

     Net sales of the Ontario joint venture for the six month and three month periods ended June 30, 2011 were $154.9 (CN$151.2) and $80.8 (CN$78.1), respectively, and $140.0 (CN$144.8) and $71.1 (CN$73.1) for the six month and three month periods ended June 30, 2010, respectively.

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PENSION AND POSTRETIREMENT PLANS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Notes To Financial Statements [Abstract]
Minimum non-elective contribution % for the 401 (K) plan (in hundredths)			3.00%
Discretionary contribution % for the 401 (K) Plan, range minimum ( in hundredths)			1.00%
Discretionary contribution % for the 401 (K) Plan, range maximum ( in hundredths)			3.00%
Defined contribution retirement plan cost			$ 22.4	$ 19.8
Defined Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	0.7	0.6	1.3	1.3
Interest cost on benefit obligation	4.2	4.6	8.6	9.2
Expected return on plan assets	(4.8)	(4.6)	(9.3)	(9.3)
Net amortization and deferral	2.0	2.0	3.7	4.0
Defined benefit plan costs	2.1	2.6	4.3	5.2
Post-Retirement Medical Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	0.1	0.1	0.2	0.2
Interest cost on benefit obligation	0.5	0.6	1.1	1.2
Net amortization and deferral	0	(0.1)	0	(0.3)
Defined benefit plan costs	$ 0.6	$ 0.6	$ 1.3	$ 1.1

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PENSION AND POSTRETIREMENT PLANS (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

The effect on operations for the Company Plan and the PEP

The effect on operations for the Company Plan and the PEP is summarized as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Service cost for benefits earned	$	0.7		$	0.6		$	1.3		$	1.3
Interest cost on benefit obligation		4.2			4.6			8.6			9.2
Expected return on plan assets		(4.8	)		(4.6	)		(9.3	)		(9.3	)
Net amortization and deferral		2.0			2.0			3.7			4.0
Defined benefit plan costs	$	2.1		$	2.6		$	4.3		$	5.2

The effect on operations of the post-retirement medical plan

The effect on operations of the post-retirement medical plan is shown in the following table:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2011		2010			2011		2010
Service cost for benefits earned	$	0.1	$	0.1		$	0.2	$	0.2
Interest cost on benefit obligation		0.5		0.6			1.1		1.2
Net amortization and deferral		--		(0.1	)		--		(0.3	)
Postretirement medical plan costs	$	0.6	$	0.6		$	1.3	$	1.1

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EARNINGS PER SHARE (Details) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Income
Net earnings, basic	$ 122.9	$ 153.7	$ 250.0	$ 286.4
Net earnings, diluted	$ 122.9	$ 153.7	$ 250.0	$ 286.4
Shares
Outstanding shares, basic (in shares)	100.6	103.5	100.4	104.0
Dilutive effect of employee stock options and awards (in shares)	1.3	0.9	1.3	0.9
Effect of convertible debt, net of tax (in shares)	0.9	1.0	0.9	1.0
Outstanding shares, diluted (in shares)	102.8	105.4	102.6	105.9
Per share amount
Basic earnings per share (in dollars per share)	$ 1.22	$ 1.48	$ 2.49	$ 2.75
Diluted earnings per share (in dollars per share)	$ 1.20	$ 1.46	$ 2.44	$ 2.70
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options (in shares)	1.4	2.8	1.2	4.0

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COMMITMENTS AND CONTINGENCIES (Details) (USD $)	6 Months Ended
	Jun. 30, 2011	Jul. 14, 2011
Notes To Financial Statements [Abstract]
Judgment amount in connection with a wrongful termination lawsuit	$ 10,000,000
Amount of the complaint in connection with a California False Claims Act lawsuit	97,500,000
Added annual simple interest resulting from the California False Claims Act lawsuit (in hundredths)	7.00%
Civil penalties amount per each alleged false claim	10,000
Amount of the settlement in principle in connection with the California False Claims Act lawsuit		49,500,000
Litigation settlement expense in connection with the California False Claims Act lawsuit	34,500,000
Previously recorded litigation reserve in connection with the California False Claims Act lawsuit	15,000,000
Letters of credit	37,300,000
Equipment lease guarantee	$ 1,000,000
Joint venture ownership interest (in hundredths)	50.00%
Remaining term on guaranteed equipment leases (in years)	1

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Derivative Instruments in Statement of Financial Position at Fair Value

     The following table summarizes the fair value and presentation in the condensed consolidated balance sheets for derivatives designated as hedging instruments (interest rate swap liability derivative) as of June 30, 2011 and December 31, 2010, respectively:

	Fair Value as of
	June 30,		December 31,
Balance Sheet Location	2011		2010
Other liabilities	$	--	$	2.4

Effect of the interest rate swap on other comprehensive income

     The following table summarizes the effect of the interest rate swap on other comprehensive income for the six months ended June 30, 2011 and 2010:

	2011		2010
Effective portion of derivative gain	$	2.4	$	4.0

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PENSION AND POSTRETIREMENT PLANS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

PENSION AND POSTRETIREMENT PLANS

12. PENSION AND POSTRETIREMENT PLANS

     The Company's defined contribution retirement plan (the “401K Plan”) covers substantially all employees. All employees eligible for the 401K Plan receive a minimum 3% non-elective contribution concurrent with each payroll period. The 401K Plan also permits discretionary contributions by the Company of 1% to 3% of pay for eligible employees based on service. The cost of this plan was $22.4 and $19.8 for the six months ended June 30, 2011 and 2010, respectively.

     The Company also maintains a frozen defined benefit retirement plan (the “Company Plan”), that as of December 31, 2009, covered substantially all employees. The benefits to be paid under the Company Plan are based on years of credited service through December 31, 2009 and ongoing interest credits. Effective January 1, 2010, the Company Plan was closed to new participants. The Company's policy is to fund the Company Plan with at least the minimum amount required by applicable regulations.

     The Company maintains a second unfunded, non-contributory, non-qualified defined benefit retirement plan (the “PEP”), that as of December 31, 2009, covered substantially all of its senior management group. The PEP supplements the Company Plan and was closed to new participants effective January 1, 2010.

The effect on operations for the Company Plan and the PEP is summarized as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
Service cost for benefits earned	$	0.7		$	0.6		$	1.3		$	1.3
Interest cost on benefit obligation		4.2			4.6			8.6			9.2
Expected return on plan assets		(4.8	)		(4.6	)		(9.3	)		(9.3	)
Net amortization and deferral		2.0			2.0			3.7			4.0
Defined benefit plan costs	$	2.1		$	2.6		$	4.3		$	5.2

     For the six months ended June 30, 2011 and 2010, the Company made no contributions to its defined benefit retirement plan.

     The Company assumed obligations under a subsidiary's post-retirement medical plan. Coverage under this plan is restricted to a limited number of existing employees of the subsidiary. This plan is unfunded and the Company's policy is to fund benefits as claims are incurred. The effect on operations of the post-retirement medical plan is shown in the following table:

	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2011		2010			2011		2010
Service cost for benefits earned	$	0.1	$	0.1		$	0.2	$	0.2
Interest cost on benefit obligation		0.5		0.6			1.1		1.2
Net amortization and deferral		--		(0.1	)		--		(0.3	)
Postretirement medical plan costs	$	0.6	$	0.6		$	1.3	$	1.1

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RESTRUCTURING AND OTHER SPECIAL CHARGES

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

RESTRUCTURING AND OTHER SPECIAL CHARGES

5.  RESTRUCTURING AND OTHER SPECIAL CHARGES

     During the first six months of 2011, the Company recorded net restructuring charges of $24.2. Of this amount, $13.3 related to severance and other personnel costs, and $13.8 primarily related to facility-related costs associated with the ongoing integration of the Genzyme Genetics* and Westcliff acquisitions. These charges were offset by restructuring credits of $2.9 resulting from the reversal of unused severance and facility closure liabilities. In addition, the Company recorded fixed assets impairment charges of $7.2 primarily related to equipment and leasehold improvements in closed facilities. The Company also recorded a special charge of $14.8 related to a write-off of certain assets and liabilities related to an investment made in a prior year.

     During the first quarter of 2010, the Company recorded net restructuring charges of $3.1 related to severance payments and the closing of redundant and underutilized facilities. Of this amount, $3.9 related to severance and other employee costs for employees primarily in the affected facilities, and $0.6 related to contractual obligations associated with leased facilities and other facility related costs. The Company also reduced its prior facility related restructuring accruals by $1.4 as a result of incurring less cost than planned on those restructuring initiatives primarily due to favorable settlements on lease buyouts. In addition, the Company recorded a special charge of $6.2 related to the write-off of development costs incurred on systems abandoned during the quarter.

* Genzyme Genetics and its logo are trademarks of Genzyme Corporation and used by Esoterix Genetic Laboratories, LLC (“EGL”), a wholly-owned subsidiary of the Company, under license. EGL and the Company are operated independently from Genzyme Corporation.

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SUPPLEMENTAL CASH FLOW INFORMATION

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION

15. SUPPLEMENTAL CASH FLOW INFORMATION

	Six Months Ended
	June 30,
	2011		2010
Supplemental schedule of cash flow information:
Cash paid during period for:
Interest	$	39.4	$	24.2
Income taxes, net of refunds		148.4		155.7
Disclosure of non-cash financing and investing activities:
Accrued repurchases of common stock	$	3.0	$	5.5

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PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Details) (USD $) In Millions, except Per Share data	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Feb. 10, 2011
Notes To Financial Statements [Abstract]
Common stock, shares authorized (in shares)	265.0
Common stock, par value per share (in dollars per share)	$ 0.10
Preferred stock, shares authorized (in shares)	30.0
Preferred stock, par value per share (in dollars per share)	$ 0.10
Rollforward of common shares issued
Common shares issued, beginning balance (in shares)	124.5
Common stock issued under employee stock plans (in shares)	1.7
Common stock issued upon conversion of zero-coupon subordinated notes (in shares)	0.9
Retirement of common stock (in shares)	(3.5)
Common shares issued, ending balance (in shares)	123.6
Rollforward of common shares held in Treasury
Common shares held in Treasury, beginning balance (in shares)	(22.1)
Surrender of restricted stock and performance share awards (in shares)	(0.1)
Common shares held in Treasury, ending balance (in shares)	(22.2)
Rollforward of common shares outstanding
Common shares outstanding, beginning balance ( in shares)	102.4
Common stock issued under employee stock plans (in shares)	1.7
Common stock issued upon conversion of zero-coupon subordinated notes (in shares)	0.9
Surrender of restricted stock and performance share awards (in shares)	(0.1)
Retirement of common stock (in shares)	(3.5)
Common shares outstanding, ending balance (in shares)	101.4
Rollforward of outstanding stock repurchase authorization
Outstanding common stock repurchase authorization, beginning balance	$ 234.3
Common stock repurchase authorization			500.0
Common shares repurchased (in shares)	3.5
Purchase of common stock	325.8	221.7
Outstanding common stock repurchase authorization, ending balance	$ 408.5

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FAIR VALUE MEASUREMENTS (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Company's population of financial assets and liabilities subject to fair value measurements

     The Company's population of financial assets and liabilities subject to fair value measurements as of June 30, 2011 and December 31, 2010 are as follows:

	Fair value		Fair Value Measurements as of
	as of		June 30, 2011
	June 30,		Using Fair Value Hierarchy
	2011		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	174.8	$	--	$	174.8	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		--		--		--		--
Total fair value of derivatives	$	--	$	--	$	--	$	--

	Fair value		Fair Value Measurements as of
	as of		December 31, 2010
	December 31,		Using Fair Value Hierarchy
	2010		Level 1		Level 2		Level 3
Noncontrolling interest puts	$	168.7	$	--	$	168.7	$	--
Derivatives
Embedded derivatives related to the zero-coupon subordinated notes	$	--	$	--	$	--	$	--
Interest rate swap liability		2.4		--		2.4		--
Total fair value of derivatives	$	2.4	$	--	$	2.4	$	--

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CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) (USD $) In Millions	Total	Common stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
BALANCE at Dec. 31, 2009	$ 2,106.1	$ 12.5	$ 36.7	$ 2,927.9	$ (932.5)	$ 61.5
Comprehensive earnings:
Net earnings attributable to Laboratory Corporation of America Holdings	286.4	0	0	286.4	0	0
Other comprehensive earnings:
Foreign currency translation adjustments	(7.9)	0	0	0	0	(7.9)
Interest rate swap adjustments	4.0	0	0	0	0	4.0
Tax effect of other comprehensive earnings adjustments	1.4	0	0	0	0	1.4
Comprehensive earnings	283.9
Issuance of common stock under employee stock plans	36.7	0.1	36.6	0	0	0
Surrender of restricted stock and performance share awards	(2.4)	0	0	0	(2.4)	0
Stock compensation	19.4	0	19.4	0	0	0
Value of noncontrolling interest put	(17.2)	0	(17.2)	0	0	0
Income tax benefit from stock options exercised	4.2	0	4.2	0	0	0
Purchase of common stock	(221.7)	(0.3)	(79.7)	(141.7)	0	0
BALANCE at Jun. 30, 2010	2,209.0	12.3	0	3,072.6	(934.9)	59.0
BALANCE at Dec. 31, 2010	2,466.3	12.2	53.9	3,246.6	(934.9)	88.5
Comprehensive earnings:
Net earnings attributable to Laboratory Corporation of America Holdings	250.0	0	0	250.0	0	0
Other comprehensive earnings:
Foreign currency translation adjustments	30.7	0	0	0	0	30.7
Interest rate swap adjustments	2.4	0	0	0	0	2.4
Tax effect of other comprehensive earnings adjustments	(12.3)	0	0	0	0	(12.3)
Comprehensive earnings	270.8
Issuance of common stock under employee stock plans	102.9	0.1	102.8	0	0	0
Surrender of restricted stock and performance share awards	(6.0)	0	0	0	(6.0)	0
Conversion of zero-coupon convertible debt	36.2	0.1	36.1	0	0	0
Stock compensation	25.5	0	25.5	0	0	0
Income tax benefit from stock options exercised	9.9	0	9.9	0	0	0
Purchase of common stock	(325.8)	(0.3)	(155.5)	(170.0)	0	0
BALANCE at Jun. 30, 2011	$ 2,579.8	$ 12.1	$ 72.7	$ 3,326.6	$ (940.9)	$ 109.3

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BUSINESS ACQUISITIONS

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

BUSINESS ACQUISITIONS

16. BUSINESS ACQUISITIONS

     During the six months ended June 30, 2011, the Company acquired various laboratories and related assets for approximately $45.0 in cash (net of cash acquired). These acquisitions were made primarily to extend the Company's geographic reach in important market areas and/or enhance the Company's scientific differentiation and esoteric testing capabilities.

     In April 2011, the Company and Orchid Cellmark Inc. (“Orchid”) announced that they had entered into a definitive agreement and plan of merger under which the Company will acquire all of the outstanding shares of Orchid in a cash tender offer for $2.80 per share for a total purchase price to stockholders and optionholders of approximately $85.4. The tender offer and the merger are subject to customary closing conditions set forth in the agreement and plan of merger, including the acquisition in the tender offer of a majority of Orchid's fully diluted shares and the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended (“HSR Act”). The closing of the acquisition is expected in the third quarter of 2011. The Company has received lawsuits filed by putative classes of shareholders of Orchid in New Jersey and Delaware state courts and federal court in New Jersey alleging breaches of fiduciary duty and/or other violations of state law arising out of the proposed acquisition of Orchid. Both Orchid and the Company are named in the lawsuits. The federal court lawsuit was subsequently dismissed and the New Jersey state court actions have been stayed. The remaining Delaware lawsuits have been consolidated and will be vigorously defended.

     In addition, the Company has received a request for additional information (commonly referred to as a "Second Request") from the Federal Trade Commission ("FTC") in connection with the Company's proposed acquisition of Orchid. The Company is cooperating with FTC staff since the Company originally filed its required notification pursuant to the HSR Act on April 18, 2011. The Company intends to continue to cooperate with the FTC to obtain clearance as promptly as possible. The issuance of the Second Request extends the HSR Act waiting period to ten days after the Company has substantially complied with the request, unless that period is terminated earlier by the FTC.

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended				6 Months Ended
	Mar. 31, 2011	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2011 Balance Sheet Location, Other Liabilities [Member]	Dec. 31, 2010 Balance Sheet Location, Other Liabilities [Member]	Jun. 30, 2011 Interest rate contract [Member]	Jun. 30, 2010 Interest rate contract [Member]
Notes To Financial Statements [Abstract]
Fixed interest rate related to interest rate swap agreement (in hundredths)	2.92%
Variable interest rate related to interest rate swap agreement	three-month LIBOR
Fair value of interest rate swap			$ 2.4
Minimum percentage of market price to calculated value of zero-coupon subordinated debt at which the entity is subject to contingent cash interest		120.00%
Derivatives, Fair Value [Line Items]
Other liabilities				0	2.4
Derivative Instruments, Gain (Loss) [Line Items]
Effective portion of derivative gain						$ 2.4	$ 4.0

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RESTRUCTURING RESERVES (Tables)

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

Restructuring Reserves Table

The following represents the Company's restructuring activities for the period indicated:

	Severance			Lease
	and Other			and Other
	Employee			Facility
	Costs			Costs			Total
Balance as of December 31, 2010	$	4.9		$	12.9		$	17.8
Restructuring charges		13.3			13.8			27.1
Reduction of prior restructuring accruals		(2.4	)		(0.5	)		(2.9	)
Cash payments and other adjustments		(6.4	)		(3.9	)		(10.3	)
Balance as of June 30, 2011	$	9.4		$	22.3		$	31.7
Current							$	19.0
Non-current								12.7
							$	31.7

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BASIS OF FINANCIAL STATEMENT PRESENTATION

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

BASIS OF FINANCIAL STATEMENT PRESENTATION

1.  BASIS OF FINANCIAL STATEMENT PRESENTATION

     The consolidated financial statements include the accounts of Laboratory Corporation of America Holdings (the “Company”) and its majority-owned subsidiaries for which it exercises control. Long-term investments in affiliated companies in which the Company exercises significant influence, but which it does not control, are accounted for using the equity method. Investments in which the Company does not exercise significant influence (generally, when the Company has an investment of less than 20% and no representation on the investee's board of directors) are accounted for using the cost method. All significant inter-company transactions and accounts have been eliminated. The Company does not have any variable interest entities or special purpose entities whose financial results are not included in the condensed consolidated financial statements.

     The financial statements of the Company's foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities are translated at exchange rates as of the balance sheet date. Revenues and expenses are translated at average monthly exchange rates prevailing during the period. Resulting translation adjustments are included in “Accumulated other comprehensive income.”

     The accompanying condensed consolidated financial statements of the Company are unaudited. In the opinion of management, all adjustments necessary for a fair statement of results of operations, cash flows and financial position have been made. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Interim results are not necessarily indicative of results for a full year. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles.

     The financial statements and notes are presented in accordance with the rules and regulations of the Securities and Exchange Commission and do not contain certain information included in the Company's 2010 Annual Report on Form 10-K. Therefore, the interim statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company's annual report.

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INCOME TAXES

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

INCOME TAXES

10. INCOME TAXES

     The Company does not recognize a tax benefit, unless the Company concludes that it is more likely than not that the benefit will be sustained on audit by the taxing authority based solely on the technical merits of the associated tax position. If the recognition threshold is met, the Company recognizes a tax benefit measured at the largest amount of the tax benefit that the Company believes is greater than 50% likely to be realized.

     The gross unrecognized income tax benefits were $57.9 and $53.6 at June 30, 2011 and December 31, 2010, respectively. It is anticipated that the amount of the unrecognized income tax benefits will change within the next twelve months; however, these changes are not expected to have a significant impact on the results of operations, cash flows or the financial position of the Company.

     As of June 30, 2011 and December 31, 2010, $58.9 and $54.6, respectively, is the approximate amount of unrecognized income tax benefits that, if recognized, would favorably affect the effective income tax rate in future periods.

     The Company recognizes interest and penalties related to unrecognized income tax benefits in income tax expense. Accrued interest and penalties related to uncertain tax positions totaled $13.9 and $12.2 as of June 30, 2011 and December 31, 2010, respectively.

     The Company has substantially concluded all U.S. federal income tax matters for years through 2006. Substantially all material state and local, and foreign income tax matters have been concluded through 2005 and 2001, respectively.

     The Company has various state income tax examinations ongoing throughout the year. Management believes adequate provisions have been recorded related to all open tax years.

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NONCONTROLLING INTEREST PUTS (Details) In Millions, unless otherwise specified	3 Months Ended					6 Months Ended				12 Months Ended
	Jun. 30, 2011 USD ($)	Jun. 30, 2011 CAD	Jun. 30, 2010 USD ($)	Jun. 30, 2010 CAD	Mar. 31, 2010	Jun. 30, 2011 USD ($)	Jun. 30, 2011 CAD	Jun. 30, 2010 USD ($)	Jun. 30, 2010 CAD	Dec. 31, 2010 USD ($)
Notes To Financial Statements [Abstract]
Ownership interest percentage in Ontario, Canada joint venture (in hundredths)	85.60%	85.60%				85.60%	85.60%
Noncontrolling interest put in Ontario, Canada joint venture						$ 0		$ 137.5		$ 137.5
Number of transactions affecting ownership interest percentage in Ontario joint venture					2
Noncontrolling interest in Ontario, Canada joint venture	30.7					30.7
Combined contractual value of noncontrolling interest puts	144.1					144.1
Noncontrolling interest current liability	153.4					153.4				148.1
Net sales of Ontario, Canada joint venture	80.8		71.1			154.9		140.0
Net sales of Ontario, Canada joint venture (in Canadian dollars)		78.1		73.1			151.2		144.8

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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

6 Months Ended

Jun. 30, 2011

Notes To Financial Statements [Abstract]

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

14. DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES

     The Company addresses its exposure to market risks, principally the market risk associated with changes in interest rates, through a controlled program of risk management that includes, from time to time, the use of derivative financial instruments such as interest rate swap agreements (see Interest Rate Swap section below). Although the Company's zero-coupon subordinated notes contain features that are considered to be embedded derivative instruments (see Embedded Derivative section below), the Company does not hold or issue derivative financial instruments for trading purposes. The Company does not believe that its exposure to market risk is material to the Company's financial position or results of operations.

Interest Rate Swap

     The interest rate swap agreement to hedge variable interest rate risk on the Company's variable interest rate term loan expired on March 31, 2011. On a quarterly basis under the swap, the Company paid a fixed rate of interest (2.92%) and received a variable rate of interest based on the three-month LIBOR rate on an amortizing notional amount of indebtedness equivalent to the term loan balance outstanding. The swap was designated as a cash flow hedge. Accordingly, the Company recognized the fair value of the swap in the condensed consolidated balance sheets and any changes in the fair value were recorded as adjustments to accumulated other comprehensive income (loss), net of tax. The fair value of the interest rate swap agreement was the estimated amount that the Company would have paid or received to terminate the swap agreement at the reporting date. The fair value of the swap was a liability of $2.4 at December 31, 2010 and was included in other liabilities in the respective condensed consolidated balance sheet.

Embedded Derivatives Related to the Zero-Coupon Subordinated Notes

     The Company's zero-coupon subordinated notes contain the following two features that are considered to be embedded derivative instruments under authoritative guidance in connection with accounting for derivative instruments and hedging activities:

1)	The Company will pay contingent cash interest on the zero-coupon subordinated notes after September 11, 2006, if the average market price of the notes equals 120% or more of the sum of the issue price, accrued original issue discount and contingent additional principal, if any, for a specified measurement period.
2)	Holders may surrender zero-coupon subordinated notes for conversion during any period in which the rating assigned to the zero-coupon subordinated notes by Standard & Poor's Ratings Services is BB- or lower.

     The Company believes these embedded derivatives had no fair value at June 30, 2011 and December 31, 2010. These embedded derivatives also had no impact on the condensed consolidated statements of operations for the six months ended June 30, 2011 and 2010.

     The following table summarizes the fair value and presentation in the condensed consolidated balance sheets for derivatives designated as hedging instruments (interest rate swap liability derivative) as of June 30, 2011 and December 31, 2010, respectively:

	Fair Value as of
	June 30,		December 31,
Balance Sheet Location	2011		2010
Other liabilities	$	--	$	2.4

     The following table summarizes the effect of the interest rate swap on other comprehensive income for the six months ended June 30, 2011 and 2010:

	2011		2010
Effective portion of derivative gain	$	2.4	$	4.0

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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 118.9	$ 230.7
Accounts receivable, net of allowance for doubtful accounts of $185.5 and $149.2 at June 30, 2011 and December 31, 2010, respectively	714.8	655.6
Supplies inventories	106.8	103.4
Prepaid expenses and other	64.4	95.7
Deferred income taxes	78.7	58.4
Total current assets	1,083.6	1,143.8
Property, plant and equipment, net	586.4	586.9
Goodwill, net	2,644.3	2,601.3
Intangible assets, net	1,676.0	1,674.1
Joint venture partnerships and equity method investments	79.4	78.5
Other assets, net	98.6	103.2
Total assets	6,168.3	6,187.8
Current liabilities:
Accounts payable	212.5	257.8
Accrued expenses and other	444.7	352.9
Noncontrolling interest	153.4	148.1
Short-term borrowings and current portion of long-term debt	215.1	361.7
Total current liabilities	1,025.7	1,120.5
Long-term debt, less current portion	1,788.2	1,826.7
Deferred income taxes and other tax liabilities	586.8	602.3
Other liabilities	166.4	151.4
Total liabilities	3,567.1	3,700.9
Commitments and contingent liabilities
Noncontrolling interest	21.4	20.6
Shareholders' equity
Common stock, 101.4 and 102.4 shares outstanding at June 30, 2011 and December 31, 2010, respectively	12.1	12.2
Additional paid-in capital	72.7	53.9
Retained earnings	3,326.6	3,246.6
Less common stock held in treasury	(940.9)	(934.9)
Accumulated other comprehensive income	109.3	88.5
Total shareholders' equity	2,579.8	2,466.3
Total liabilities and shareholders' equity	$ 6,168.3	$ 6,187.8

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RESTRUCTURING RESERVES (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011
Restructuring Reserve [Line Items]
Balance as of December 31, 2010	$ 17.8
Restructuring charges	27.1
Reduction of prior restructuring accruals	(2.9)
Cash payments and other adjustments	(10.3)
Balance as of June 30, 2011	31.7
Current	19.0
Non-current	12.7
Severance and Other Employee Costs [Member]
Restructuring Reserve [Line Items]
Balance as of December 31, 2010	4.9
Restructuring charges	13.3
Reduction of prior restructuring accruals	(2.4)
Cash payments and other adjustments	(6.4)
Balance as of June 30, 2011	9.4
Lease and Other Facility Costs [Member]
Restructuring Reserve [Line Items]
Balance as of December 31, 2010	12.9
Restructuring charges	13.8
Reduction of prior restructuring accruals	(0.5)
Cash payments and other adjustments	(3.9)
Balance as of June 30, 2011	$ 22.3

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SUPPLEMENTAL CASH FLOW INFORMATION (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash paid during period for:
Interest	$ 39.4	$ 24.2
Income taxes, net of refunds	148.4	155.7
Disclosure of non-cash financing and investing activities:
Accrued repurchases of common stock	$ 3.0	$ 5.5

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BUSINESS ACQUISITIONS (Details) (USD $) In Millions, except Per Share data	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Notes To Financial Statements [Abstract]
Various laboratories and related assets acquired in cash, net of cash acquired	$ 45.0	$ 174.9
Announced date of Proposed Acquisition of Orchid Cellmark, Inc.	April 2011
Name of Entity in Proposed Acquisition	Orchid Cellmark, Inc
Per share cash tender offer in Proposed Acquisition of Orchid Cellmark, Inc. (in dollars per share)	$ 2.80
Amount of proposed purchase price to stockholders and optionholders of Orchid Cellmark, Inc.	$ 85.4
Extension of the HSR Act waiting period in connection with Proposed Acquisition of Orchid Cellmark, Inc.	10 days after the Company has substantially complied with the request for additional information

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GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2010
Goodwill rollforward
Balance at beginning of period			$ 2,601.3	$ 1,897.1	$ 1,897.1
Goodwill acquired during the period			44.2		704.4
Adjustments to goodwill			(1.2)		(0.2)
Balance at end of period	2,644.3		2,644.3		2,601.3
Identifiable Intangible Assets [Line Items]
Gross carrying amount	2,224.8		2,224.8		2,179.5
Accumulated amortization	(548.8)		(548.8)		(505.4)
Intangible Assets Amortization Expense
Amortization of intangible assets	21.5	17.7	43.4	35.1
Estimated amortization expense, remainder of 2011			42.7
Estimated amortization expense, 2012			81.8
Estimated amortization expense, 2013			76.2
Estimated amortization expense, 2014			73.4
Estimated amortization expense, 2015			69.8
Estimated amortization expense, thereafter			566.8
Canadian licenses	765.3		765.3		738.9
Customer relationships [Member]
Identifiable Intangible Assets [Line Items]
Gross carrying amount	1,163.3		1,163.3		1,146.0
Accumulated amortization	(399.1)		(399.1)		(370.0)
Patents, Licenses And Technology [Member]
Identifiable Intangible Assets [Line Items]
Gross carrying amount	144.7		144.7		144.7
Accumulated amortization	(82.0)		(82.0)		(75.7)
Non-compete agreements [Member]
Identifiable Intangible Assets [Line Items]
Gross carrying amount	28.0		28.0		26.6
Accumulated amortization	(12.1)		(12.1)		(9.4)
Trade name [Member]
Identifiable Intangible Assets [Line Items]
Gross carrying amount	123.5		123.5		123.3
Accumulated amortization	(55.6)		(55.6)		(50.3)
Canadian licenses [Member]
Identifiable Intangible Assets [Line Items]
Gross carrying amount	765.3		765.3		738.9
Accumulated amortization, indefinite-lived intangible asset	$ 0		$ 0		$ 0