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 March 31, 2005.

OR

[   ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

        For The Transiton Period From __________To __________.

COMMISSION FILE NUMBER 0-19271

IDEXX LABORATORIES, INC.
(Exact name of registrant as specified in its charter)

DELAWARE	01-0393723
(State of incorporation)	(IRS Employer Identification No.)
One IDEXX Drive, Westbrook, Maine	04092
(Address of principal executive offices)	(ZIP Code)

207-856-0300

(Registrant’s telephone number, including area code)

        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 is an accelerated filer (as defined in Rule 12b-2 of the Exchange Act). Yes [X] No [  ]

        Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

        As of April 29, 2005, 32,594,464 shares of the registrant’s Common Stock, $.10 par value, were outstanding.

1

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

INDEX

PART I		FINANCIAL INFORMATION	Page
	Item 1.	Financial Statements
		Consolidated Balance Sheets as of March 31, 2005 and
		December 31, 2004	3
		Consolidated Statements of Operations for the three months
		ended March 31, 2005 and 2004	4
		Consolidated Statements of Cash Flows for the three months
		ended March 31, 2005 and 2004	5
		Notes to Consolidated Financial Statements	6
	Item 2.	Management’s Discussion and Analysis of Financial Condition
		and Results of Operations	14
	Item 3.	Quantitative and Qualitative Disclosures About Market Risk	24
	Item 4.	Controls and Procedures	24
PART II		OTHER INFORMATION
	Item 2.	Changes in Securities, Use of Proceeds and Issuer Purchases of Equity Securities	25
	Item 6.	Exhibits	25
SIGNATURES			26

2

PART I FINANCIAL INFORMATION
Item 1. Financial Statements

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
(in thousands, except per share amounts)
(Unaudited)

	March 31,			December 31,
	2005			2004
ASSETS
Current Assets:
Cash and cash equivalents	$	44,579		$	47,156
Short-term investments		65,622			90,116
Accounts receivable, less reserves of $1,355 and $1,494 in 2005 and 2004,
respectively		75,617			65,639
Inventories		78,481			76,424
Deferred income taxes		12,473			13,460
Other current assets		9,572			8,797
Total current assets		286,344			301,592
Long-term Investments		12,037			19,687
Property and Equipment, at cost:
Land		2,197			2,216
Buildings		5,260			5,273
Leasehold improvements		34,537			33,240
Machinery and equipment		56,182			52,564
Office furniture and equipment		37,400			37,000
Construction in progress		5,138			7,558
		140,714			137,851
Less accumulated depreciation and amortization		77,970			75,221
		62,744			62,630
Other Long-term Assets:
Goodwill		91,092			92,937
Other intangible assets, net of accumulated amortization of $7,375 and
$6,472 for 2005 and 2004, respectively		29,718			31,557
Other noncurrent assets, net		5,983			5,834
		126,793			130,328
TOTAL ASSETS	$	487,918		$	514,237
LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities:
Accounts payable	$	12,957		$	14,723
Accrued expenses		17,052			20,551
Accrued employee compensation and related expenses		18,826			26,163
Accrued taxes		14,000			15,461
Accrued marketing and customer programs		10,515			8,825
Warranty and extended maintenance agreement reserves		2,558			2,785
Notes payable		526			1,291
Deferred revenue		8,617			10,153
Total current liabilities		85,051			99,952
Long-term Liabilities:
Deferred tax liabilities		7,777			8,450
Notes payable		--			519
Warranty and extended maintenance agreement reserves		856			1,011
Deferred revenue		6,447			6,253
Total long-term liabilities		15,080			16,233
Commitments and Contingencies (Note 9):
Partner's Interest in Consolidated Subsidiary		342			392
Stockholders' Equity:
Common stock, $0.10 par value; Authorized: 60,000 shares; Issued: 45,332 and
45,217 shares in 2005 and 2004, respectively		4,533			4,522
Additional paid-in capital		414,397			410,817
Deferred equity-based compensation; Issued: 23 and 14 units in 2005 and
2004, respectively		1,174			665
Retained earnings		336,372			318,682
Accumulated other comprehensive income		8,836			11,301
Treasury stock (12,656 and 12,125 shares in 2005 and 2004, respectively),
at cost		(377,867	)		(348,327	)
Total stockholders' equity		387,445			397,660
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$	487,918		$	514,237

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

3

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share amounts)
(Unaudited)

	For the Three Months Ended March 31,
	2005			2004
Revenue:
Product revenue	$	111,159		$	101,712
Service revenue		41,267			31,705
		152,426			133,417
Cost of Revenue:
Cost of product revenue		48,047			44,752
Cost of service revenue		28,299			21,619
		76,346			66,371
Gross profit		76,080			67,046
Expenses:
Sales and marketing		25,070			20,983
General and administrative		15,098			12,242
Research and development		9,774			8,520
Income from operations		26,138			25,301
Interest income		503			729
Income before provision for income taxes and partner's interest		26,641			26,030
Provision for income taxes		9,052			8,372
Partner's interest in loss of subsidiary		(101	)		(133	)
Net income	$	17,690		$	17,791
Earnings per Share:
Basic	$	0.54		$	0.51
Diluted	$	0.51		$	0.49
Weighted Average Shares Outstanding:
Basic		32,955			34,775
Diluted		34,439			36,437

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

4

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASHFLOWS
(in thousands)
(Unaudited)

	For the Three Months Ended March 31,
	2005			2004
Cash Flows from Operating Activities:
Net income	$	17,690		$	17,791
Adjustments to reconcile net income to net cash provided by operating
activities:
Depreciation and amortization		5,816			4,314
Partner's interest in loss of subsidiary		(101	)		(133	)
Recovery of uncollectible accounts		(56	)		(4	)
Provision for (benefit of) deferred income taxes		(256	)		2,697
Tax benefit on exercise of nonqualified stock options and disqualifying
dispositions		987			4,743
Provision for deferred equity-based compensation		--			46
Changes in assets and liabilities, net of acquisitions:
Accounts receivable		(10,728	)		(6,889	)
Inventories		(2,139	)		(527	)
Other assets		(928	)		124
Accounts payable		(1,658	)		(4,317	)
Accrued liabilities		(7,156	)		(7,226	)
Deferred revenue		(1,189	)		49
Net cash provided by operating activities		282			10,668
Cash Flows from Investing Activities:
Purchase of short- and long-term investments		--			(13,642	)
Sales and maturities of short- and long-term investments		32,112			14,085
Purchase of property and equipment		(4,536	)		(6,003	)
Acquisition of equipment leased to customers		(696	)		(466	)
Acquisitions of intangible assets and businesses, net of cash acquired		(659	)		(5,342	)
Net cash provided (used) by investing activities		26,221			(11,368	)
Cash Flows from Financing Activities:
Payment of notes payable		(1,271	)		(254	)
Purchase of treasury stock		(29,540	)		(22,417	)
Proceeds from exercise of stock options		2,603			11,005
Net cash used by financing activities		(28,208	)		(11,666	)
Net effect of exchange rates on cash		(872	)		184
Net decrease in cash and cash equivalents		(2,577	)		(12,182	)
Cash and cash equivalents at beginning of period		47,156			96,942
Cash and cash equivalents at end of period	$	44,579		$	84,760
Supplemental Disclosure of Cash Flow Information:
Interest paid	$	40		$	31
Income taxes paid	$	11,392		$	7,976
Supplemental Disclosure of Non-Cash Information:
Value of mature shares exchanged in stock option exercises	$	--		$	56

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

5

IDEXX LABORATORIES, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)

Note 1.     Basis of Presentation

        The accompanying unaudited, consolidated financial statements of IDEXX Laboratories, Inc. (“IDEXX” or the “Company”) have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the requirements of Regulation S-X, Rule 10-01 for financial statements required to be filed as a part of the Form 10-Q.

        The accompanying interim consolidated financial statements reflect, in the opinion of the Company’s management, all adjustments necessary for a fair statement of the financial position and results of operations. The results of operations for the three months ended March 31, 2005 are not necessarily indicative of the results to be expected for the full year or any future period. These financial statements should be read in conjunction with this Form 10-Q for the three months ended March 31, 2005, and the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 filed with the Securities and Exchange Commission.

        Reclassifications have been made to the prior year consolidated financial statements to conform to the current year presentation. In connection with the preparation of our report on Form 10-K for the year ended December 31, 2004, we concluded that it was appropriate to classify our auction rate municipal bonds as short-term investments. Previously, such investments had been classified as cash and cash equivalents. Accordingly, we have made adjustments to our Consolidated Statement of Cash Flows for the period ended March 31, 2004 to reflect the gross purchases and sales of these securities as investing activities rather than as a component of cash and cash equivalents. This change in classification does not affect previously reported cash flows from operations or from financing activities in our previously reported Consolidated Statements of Cash Flows for any period, or our previously reported Consolidated Statements of Operations for any period. As of March 31, 2004 and for the three months then ended, $95.8 million of these short-term investments were classified as cash and cash equivalents on our Consolidated Balance Sheet and related Consolidated Statements of Cash Flows. For the three months ended March 31, 2004, net cash used in investing activities related to these current investments was $6.0 million, which was previously reported as cash and cash equivalents in our Consolidated Statements of Cash Flows.

        Stock-Based Compensation

        The Company measures costs related to employee stock-based compensation plans in accordance with Accounting Principles Board (“APB”) Opinion No. 25, “Accounting for Stock Issued to Employees” (“APB No. 25”), and elects to disclose the pro forma impact of accounting for stock-based compensation plans under the provisions of Statement of Financial Accounting Standards (“SFAS”) No. 123, “Accounting for Stock-Based Compensation” and SFAS No. 148, “Accounting for Stock-Based Compensation—Transition and Disclosure—An Amendment of FASB No. 123” (collectively, “SFAS No. 123, as Amended”). Accordingly, no employee compensation cost has been recognized for these plans based on SFAS No. 123, as Amended.

6

        Had compensation cost for the Company’s stock-based compensation and employee stock purchase plans been determined consistent with the provisions of SFAS No. 123, as Amended, the Company’s net income and net income per common and common equivalent share would have been reduced to the following pro forma amounts (in thousands, except per share amounts):

	For the Three Months Ended March 31,
	2005			2004
Net income:
As reported	$	17,690		$	17,791
Pro forma stock-based employee compensation, net of tax		(2,216	)		(1,764	)
Pro forma net income	$	15,474		$	16,027
Earnings per share:
Basic: as reported	$	0.54		$	0.51
Basic: pro forma		0.47			0.46
Diluted: as reported		0.51			0.49
Diluted: pro forma		0.45			0.44

        In order to determine the pro forma impact under SFAS No. 123, as Amended, the fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted average assumptions:

	For the Three Months Ended March 31,
	2005		2004
Dividend yield	None		None
Expected volatility	40.0	%	40.0	%
Risk-free interest rate	4.2	%	3.0	%
Expected life from vesting date to exercise date, in years	2.8		2.8

        In order to determine the pro forma impact under SFAS No. 123, as Amended, the fair value of the purchase rights under the employee stock purchase plans is estimated using the Black-Scholes option-pricing model with the following weighted average assumptions:

	For the Three Months Ended March 31,
	2005		2004
Dividend yield	None		None
Expected volatility	33.0	%	33.0	%
Risk-free interest rate	3.0	%	1.1	%
Expected life in years	0.5		0.5

        The weighted average fair value of options and purchase rights granted were as follows:

	For the Three Months Ended March 31,
	2005		2004
Weighted average fair value per underlying share:
Options granted	$	25.28	$	21.41
Purchase rights under employee stock purchase plans		N/A		N/A

        During the three months ended March 31, 2005 and 2004, approximately 9,000 Deferred Stock Units valued at $0.5 million and 9,000 Deferred Stock Units valued at $0.4 million were issued, respectively.

7

        New Accounting Standards

        In December 2004, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 123(R), “Share-Based Payment,” which is a revision of SFAS No. 123 and supersedes APB No. 25. SFAS No. 123(R) requires all share-based payments to employees, including grants of employee stock options, to be valued at fair value on the date of grant, and to be expensed over the applicable vesting period. Pro forma disclosure of the income statement effects of share-based payments is no longer an alternative. Implementation of SFAS No. 123(R) was originally required as of the beginning of the first interim or annual period that begins after June 15, 2005, however, the Securities and Exchange Commission amended the compliance date for public companies to the beginning of their next fiscal year that begins after June 15, 2005. Companies must also recognize compensation expense related to any awards that are not fully vested as of the amended effective date. Compensation expense for the unvested awards will be measured based on the fair value of the awards previously calculated in developing the pro forma disclosures in accordance with the provisions of SFAS No. 123. The Company plans to use the modified prospective application method and to adopt the standard on January 1, 2006.

Note 2.     Business Acquisitions

        In March 2005, the Company paid cash of $0.5 million to acquire certain assets of a veterinary reference laboratory located in Switzerland. Goodwill and other intangible assets of $0.2 million and $0.2 million, respectively, were assigned to the Companion Animal Group segment. The results of operations of the acquired business have been included with those of the Company since the acquisition date. Pro forma information has not been presented because such information is not material to the financial statements of the Company taken as a whole.

Note 3.     Inventories

        Inventories include material, labor and overhead, and are stated at the lower of cost (first-in, first-out) or market. The components of inventories are as follows (in thousands):

	March 31,		December 31,
	2005		2004
Raw materials	$	20,803	$	20,847
Work-in-process		13,152		10,363
Finished goods		44,526		45,214
	$	78,481	$	76,424

Note 4.     Goodwill and Other Intangible Assets

        Goodwill consists of the following (in thousands):

	March 31, 2005		December 31, 2004
Companion Animal Group Segment:
Veterinary reference laboratories	$	53,006	$	54,067
Pharmaceuticals		13,745		13,745
Other goodwill		591		593
Water Segment:
Water testing products		16,518		16,885
Food Diagnostics Group Segment:
Production animal diagnostics		7,232		7,647
	$	91,092	$	92,937

        During the three months ended March 31, 2005, the Company acquired goodwill related to an acquisition. See Note 2. The remaining change in goodwill noted above results from changes in foreign currency exchange rates.

8

        Intangible assets other than goodwill consist of the following (in thousands):

	March 31, 2005				December 31, 2004
	Cost		Accumulated Amortization		Cost		Accumulated Amortization
Existing technologies	$	9,837	$	2,316	$	10,309	$	1,987
Licenses		3,800		1,496		3,800		1,409
Customer relationships		13,857		625		14,249		362
Customer lists		638		401		638		377
Noncompete agreements		2,710		727		2,686		591
Patents		6,123		1,801		6,211		1,744
Other		128		9		136		2
	$	37,093	$	7,375	$	38,029	$	6,472

        During the three months ended March 31, 2005, the Company acquired amortizable intangible assets related to an acquisition. See Note 2. The remaining change in intangible assets other than goodwill noted above results from changes in foreign currency exchange rates.

        Amortization expense of intangible assets was $1.0 million and $0.3 million for the three months ended March 31, 2005 and 2004, respectively. The increase in amortization expense for the three months ended March 31, 2005 compared to the expense for the three months ended March 31, 2004 results from amortization of intangibles acquired in connection with businesses acquired in 2004. See Note 3 of the Notes to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 filed with the Securities and Exchange Commission for additional information about the business acquisitions.

Note 5.     Warranty and Extended Maintenance Agreement Reserves

        The Company provides for the estimated cost of product warranties in cost of product revenue at the time revenue is recognized. The Company’s actual warranty obligation is affected by product failure rates and service costs incurred in correcting a product failure. Should actual product failure rates or service costs differ from management’s estimates, which are based on historical data, revisions to the estimated warranty liability would be required. Following is a summary of changes in accrued warranty reserve for products sold to customers for the three months ended March 31, 2005 and 2004, respectively (in thousands):

	For the Three Months Ended March 31,
	2005			2004
Balance, beginning of period	$	3,679		$	3,303
Provision for warranty expense		733			1,185
Provision for (benefit of) change in estimate of prior
warranty expense		(208	)		1,368
Settlement of warranty liability		(849	)		(868	)
Balance, end of period		3,355			4,988
Long-term portion		811			1,423
Current portion of warranty reserves	$	2,544		$	3,565

        The benefit of the change in estimate of prior warranty expense for the three months ended March 31, 2005 was due to improved service experience for LaserCyte^® instruments during the period. The provision for the change in estimate of prior warranty expense for the three months ended March 31, 2004 was due to increasing LaserCyte^® instrument service costs during the period.

        The Company sells extended maintenance agreements covering its instruments and recognizes associated revenue over the life of the contracts. The Company anticipates that losses will be incurred for certain of these contracts and has recognized provisions for the estimated losses. The anticipated loss reserves were $0.1 million and $0.1 million as of March 31, 2005 and December 31, 2004, respectively.

9

Note 6.     Income Taxes

        The effective tax rate was 33.9% for the three months ended March 31, 2005. For the full year ended December 31, 2004, the effective tax rate was 29.7%, while it was 32.0% for the three months ended March 31, 2004. The majority of the reduction in the effective tax rate for the year ended December 31, 2004 compared to the three months ended March 31, 2004 resulted from the resolution of an Internal Revenue Service income tax audit through the year 2001. As a result of completing this audit, the Company reduced previously accrued taxes. Other rate reductions resulted from the release in 2004 of a valuation allowance on international deferred tax assets as a result of a foreign subsidiary demonstrating consistent sustained profitability and changes in certain state and international tax estimates.

        The effective tax rate recorded for the three months ended March 31, 2005 increased to 33.9% from 32.0% for the three months ended March 31, 2004 primarily due to an international tax provision.

        The recently enacted American Jobs Creation Act of 2004 allows for a reduced rate of United States tax on qualifying repatriations of earnings held outside the United States. The Company is currently studying the impact of this provision and has not made a final determination as to the amounts, if any, that will be repatriated. As such, the income tax effect of any repatriation cannot be estimated.

Note 7.     Comprehensive Income (in thousands):

	For the Three Months Ended March 31,
	2005			2004
Net income	$	17,690		$	17,791
Other comprehensive income (loss):
Foreign currency translation adjustments		(4,371	)		716
Change in fair value of foreign currency contracts
classified as hedges, net of tax		1,926			970
Change in fair market value of
investments, net of tax		(20	)		29
Comprehensive income	$	15,225		$	19,506

Note 8.     Earnings per Share

        The following is a reconciliation of shares outstanding for basic and diluted earnings per share (in thousands):

	For the Three Months Ended March 31,
	2005		2004
Shares Outstanding for Basic Earnings per Share:
Weighted average shares outstanding		32,937		34,768
Weighted average deferred stock units outstanding		18		7
		32,955		34,775
Shares Outstanding for Diluted Earnings per Share:
Shares outstanding for basic earnings per share		32,955		34,775
Dilutive effect of options issued to employees and directors		1,484		1,662
		34,439		36,437

10

        Certain options to acquire shares have been excluded from the calculation of shares outstanding for diluted earnings per share because they were anti-dilutive. The weighted average number of anti-dilutive options, the weighted average exercise price of such anti-dilutive options and the weighted average market value of shares used to calculate the dilutive effect were as follows (in thousands, except per share amounts):

	For the Three Months Ended March 31,
	2005		2004
Weighted average number of shares underlying anti-dilutive options		408		329
Weighted average exercise price per underlying share of anti-dilutive options	$	57.52	$	50.92
Weighted average market value per share	$	55.48	$	50.74

        The following table presents additional information concerning the exercise prices of options outstanding at the end of the period (in thousands, except per share amounts):

	March 31, 2005		March 31, 2004
Closing price per share of our common stock	$	54.16	$	56.87
Number of shares underlying options with exercise prices below the closing price		3,736		4,211
Number of shares underlying options with exercise prices equal to or above the closing price		622		1
Total number of shares underlying outstanding options		4,358		4,212

Note 9.     Commitments and Contingencies

        During the three months ended March 31, 2005, there was no significant change in the Company’s material commitments and contingencies, described in Notes 10 and 16 of the Notes to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 filed with the Securities and Exchange Commission.

        On June 18, 2003, the Company and Beijing Fortunate Century Animal Health Co., Ltd. (“BFCAH”), formed a joint venture, Beijing IDEXX-Yuanheng Laboratories Co. Limited (the “Venture”), to assemble and market veterinary diagnostic products for production animals in China. The Venture is headquartered in Beijing, China. The Company’s initial equity interest in the Venture is 40%, however, the Company is committed to acquire an additional 20% of the Venture from BFCAH within two years of the formation of the joint venture, subject to Chinese government approval. As of March 31, 2005, the Company is obligated to make future capital contributions of $0.5 million before August 11, 2005. In addition, the Company is obligated to pay $0.6 million for the additional 20% interest discussed above, and to make an additional $1.5 million capital contribution to the Venture within three months after the approval by the Chinese government of the additional 20% interest. The Company is also obligated to make available to the Venture selected technology, know-how and licenses and to assist with certain logistical, management training and operating matters. In connection with the joint venture agreement, the Company has not entered into indemnification agreements or assumed liabilities predating the establishment of the Venture.

        The Company is subject to claims that arise in the ordinary course of business, including with respect to actual and threatened litigation and other matters. The Company accrues contingent liabilities when it is probable that future expenditures will be made and such expenditures can reasonably be estimated. However, the Company’s actual losses with respect to these contingencies could exceed the Company’s accruals. Contingency matters are summarized below:

        Under the Company’s workers’ compensation insurance policy for U.S. employees for the year ending December 31, 2005, the Company retains the first $0.25 million in claim liability per incident and approximately $2.5 million in aggregate claim liability based on actual payroll expense. For the year ended December 31, 2004, the Company retained the first $0.25 million in claim liability per incident and $3.0 million in aggregate claim liability. For the year ended December 31, 2003, the Company retained the first $0.25 million in claim liability per incident and $1.4 million in aggregate claim liability. The Company estimates claim liability based on claims incurred and the estimated ultimate cost to settle the claims. Based on this analysis, the Company has recognized cumulative expenses of $0.7 million and $0.9 million for claims incurred during the years ended December 31, 2004 and 2003, respectively, and $0.2 million for claims incurred during the three months ended March 31, 2005. In connection with these policies, the Company has outstanding letters of credit totaling $1.6 million to the insurance companies as security for these claims as of March 31, 2005.

11

        Under the Company’s employee health care insurance policy, the Company retains claims liability risk up to $0.1 million per incident and an aggregate claim limit based on monthly participation levels in the employee health care plan. The Company estimates its provision for the uninsured portion of employee health care obligations based on costs of claims incurred and an estimate for claims incurred but not reported. Should actual employee health care claims liability exceed estimates, the Company is liable for up to an additional $1.4 million for potential uninsured obligations as of March 31, 2005. The Company has insurance coverage of $1.0 million for claims above the aggregate limit. Should employee health insurance claims exceed this coverage, the Company would have further obligations for the amount in excess of such coverage.

        The Company has entered into employment agreements with two of its officers whereby payments may be required if the Company terminates their employment without cause. The amounts payable are based upon the executives’ salaries at the time of termination and the cost to the Company of continuing to provide certain benefits. Had both of such officers been terminated as of March 31, 2005, the Company would have had aggregate obligations of approximately $1.9 million under such agreements. The Company has entered into employment agreements with each of its officers that require the Company to make certain payments in the event the officer’s employment is terminated under certain circumstances within a certain period following a change in control of the Company. The amounts payable by the Company under these agreements are based on the officer’s salary and bonus history at the time of termination and the cost to the Company of continuing to provide certain benefits. Had all of the Company’s officers been terminated following a change in control as of March 31, 2005, the Company would have had aggregate obligations of approximately $11.1 million under these agreements. These agreements also provide for the acceleration of the vesting of all stock options held by two of the officers immediately upon a change in control, and of all stock options held by the Company’s other executive officers upon any qualifying termination following a change in control. The Company also has employment agreements with other employees through 2009 that provide for total payments of $1.5 million.

        The Company currently purchases certain products and materials from single sources or a limited number of sources. Some of the products that the Company purchases from these sources are proprietary, and, therefore, may not be available from other sources. These products include the Company’s VetTest^® chemistry, QBC^® VetAutoread™ hematology, VetLyte^® electrolyte, and VetStat™ blood gas analyzers and related consumables, digital radiography systems, active ingredients for pharmaceutical products, including Navigator^®, and certain components of the Company’s SNAP^® rapid assay devices, water testing products, and LaserCyte^® systems. If the Company is unable to obtain adequate quantities of these products in the future, it could face cost increases or reductions or delays in product shipments, which could have a material adverse effect on its results of operations.

        From time to time, the Company has received notices alleging that the Company’s products infringe third-party proprietary rights, although the Company is not aware of any pending litigation with respect to such claims. Patent litigation frequently is complex and expensive, and the outcome of patent litigation can be difficult to predict. There can be no assurance that the Company will prevail in any infringement proceedings that may be commenced against the Company. If the Company loses any such litigation, it may be stopped from selling certain products and/or it may be required to pay damages as a result of the litigation.

Note 10.     Treasury Stock

        The Company’s Board of Directors has authorized the repurchase of up to 14,000,000 shares of the Company’s common stock in the open market or in negotiated transactions. During the three months ended March 31, 2005, the Company repurchased 530,800 shares of common stock for $29.5 million. During the three months ended March 31, 2004, the Company repurchased 434,500 shares of common stock for $22.0 million and received 1,100 shares of stock which had a market value of $0.1 million. The 1,100 shares were received in payment for the exercise price of stock options and had been owned by the holder for greater than six months. From the inception of the program in August 1999 to March 31, 2005, the Company repurchased 12,485,600 shares for $371.8 million and received 170,400 shares of stock with a market value of $6.0 million in payment for the exercise price of stock options.

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Note 11.     Preferred Stock Purchase Rights

        On March 8, 2005, the Company amended its Shareholder Rights Plan (the “Plan”). Under the Plan, each preferred stock purchase right may be exercised to purchase one one-thousandth of a share of Series A Junior Participating Preferred Stock at a purchase price of $200.00. The rights will be exercisable only if a person or group has acquired beneficial ownership of 25% or more of the Company’s common stock (“Common Stock”) or commenced a tender or exchange offer that would result in such a person or group owning 30% or more of the Common Stock. The Company generally will be entitled to redeem the rights, in whole, but not in part, at a price of $.01 per right at any time until the tenth business day following a public announcement that a 25% stock position has been acquired and in certain other circumstances. Prior to the March 2005 amendment, the rights were exercisable if a person or group had acquired beneficial ownership of 20% or more of the Common Stock or commenced a tender or exchange offer that would result in such a person or group owning 30% or more of the Common Stock.

        If any person or group becomes a beneficial owner of 25% or more of the Common Stock (except pursuant to a tender or exchange offer for all shares at a fair price as determined by the outside members of the Company’s Board of Directors), each right not owned by a 25% stockholder will enable its holder to purchase such number of shares of Common Stock as is equal to the exercise price of the right divided by one-half of the current market price of the Common Stock on the date of the occurrence of the event. Prior to the March 2005 amendment, these rights were exercisable if any person or group had acquired beneficial ownership of 20% or more of the Common Stock, subject to the exception. In addition, if the Company thereafter is acquired in a merger or other business combination with another person or group in which it is not the surviving corporation or in connection with which its Common Stock is changed or converted, or if the Company sells or transfers 50% or more of its assets or earning power to another person, each right that has not previously been exercised will entitle its holder to purchase such number of shares of common stock of such other person as is equal to the exercise price of the right divided by one-half of the current market price of such common stock on the date of the occurrence of the event.

        See Note 12 of the Notes to the Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 filed with the Securities and Exchange Commission for additional information about the Plan.

Note 12.     Segment Reporting

        The Company discloses information regarding its segments in accordance with the provisions of SFAS No. 131, “Disclosures about Segments of an Enterprise and Related Information” (“SFAS No. 131”). SFAS No. 131 requires disclosures about operating segments in annual financial statements and requires selected information about operating segments in interim financial statements. It also requires related disclosures about products and services and geographic areas. Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision-making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is the Chief Executive Officer.

        The Company is organized into business units by market and customer group. The Company’s reportable operating segments include the Companion Animal Group (“CAG”), the Water testing business (“Water”) and the Food Diagnostics Group (“FDG”) and other. CAG develops, designs, manufactures, and distributes products and performs services for veterinarians. CAG also manufactures certain biology-based test kits for veterinarians and develops products for therapeutic applications in companion animals. Water develops, designs, manufactures and distributes products to detect contaminants in water. FDG develops, designs, manufactures and distributes products to detect disease and contaminants in food animals and food. Other encompasses activities that are not included in the Company’s reportable segments and is comprised primarily of corporate research and development and interest income.

        The accounting policies of the segments are the same as those described in the summary of significant accounting policies in the Company’s Annual Report on Form 10-K for the year ended December 31, 2004 in Notes 2 and 18.

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        The following is the segment information (in thousands):

	For the Three Months Ended March 31,
	CAG		Water		FDG		Other			Consolidated Total
2005
Revenues	$	124,880	$	12,806	$	14,740	$	--		$	152,426
Income (loss) from operations	$	18,888	$	5,504	$	2,578	$	(832	)	$	26,138
Interest income											503
Income before provisions for
income taxes and partner's interest											26,641
Provision for income taxes											9,052
Partner's interest in loss of subsidiary											(101	)
Net income										$	17,690
2004
Revenues	$	109,830	$	11,854	$	11,733	$	--		$	133,417
Income (loss) from operations	$	18,248	$	5,055	$	2,923	$	(925	)	$	25,301
Interest income											729
Income before provisions for
income taxes and partner's interest											26,030
Provision for income taxes											8,372
Partner's interest in loss of subsidiary											(133	)
Net income										$	17,791

        Revenues by product and service categories were as follows (in thousands):

	For the Three Months Ended March 31,
	2005		2004
CAG revenue:
Instruments and consumables	$	52,873	$	48,811
Rapid assay products		24,752		24,245
Laboratory and consulting services		36,544		27,105
Information products and services and digital radiography		7,461		7,328
Pharmaceutical products		3,250		2,341
Net CAG revenue		124,880		109,830
Net Water revenue		12,806		11,854
FDG revenue:
Production animal products		10,862		7,898
Dairy testing products		3,878		3,835
Net FDG revenue		14,740		11,733
Net revenue	$	152,426	$	133,417

Item 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

        This quarterly report on Form 10-Q includes or incorporates forward-looking statements about our business and expectations within the meaning of the Private Securities Litigation Reform Act of 1995, including statements relating to future revenue growth rates, demand for our products, realizability of assets, warranty expense, and competition. You can generally identify forward-looking statements by the fact that they do not relate strictly to historical or current facts. Words such as “expects,” “may,” “anticipates,” “intends,” “would,” “will,” “plans,” “believes,” “estimates,” “should,” and similar words and expressions are intended to help you identify forward-looking statements. These statements give our current expectations or forecasts of future events, are based on current estimates, projections, beliefs, and assumptions of IDEXX and its management, and are not guarantees of future performance. Actual results may differ materially from those described in the forward-looking statements. These forward-looking statements involve a number of risks and uncertainties as more fully described under the heading “Future Operating Results” in this Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2004. The risks and uncertainties discussed herein and in our Annual Report on Form 10-K for the year ended December 31, 2004 do not reflect the potential future impact of any mergers, acquisitions or dispositions. In addition, any forward-looking statements represent our estimates only as of the day this Quarterly Report was first filed with the Securities and Exchange Commission and should not be relied upon as representing our estimates as of any subsequent date. While we may elect to update forward-looking statements at some point in the future, we specifically disclaim any obligation to do so, even if our estimates change.

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        Refer to the section of our Annual Report on Form 10-K for the year ended December 31, 2004 entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates” for a discussion of significant judgments and estimates used in the preparation of our consolidated financial statements.

BUSINESS OVERVIEW

        We operate primarily through three business segments: the Companion Animal Group (“CAG”), Water testing business (“Water”) and the Food Diagnostics Group (“FDG”). CAG is comprised of the following product and service categories: instruments and consumables; rapid assays; laboratory and consulting services; information products and services and digital radiography; and pharmaceuticals. Water develops, designs, manufactures and distributes products to detect contaminants in water. FDG develops, designs, manufactures and distributes products to detect disease and contaminants in food animals and food. Other items that are not included in our reportable segments are comprised primarily of corporate research and development and interest income.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

        The critical accounting policies utilized during the three months ended March 31, 2005 are consistent with those discussed in our Annual Report on Form 10-K for the year ended December 31, 2004 in the section captioned “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates.” The significant judgments and estimates used in the preparation of our consolidated financial statements for the three months ended March 31, 2005 are also consistent with those used to prepare the consolidated financial statements as of and for the year ended December 31, 2004.

RESULTS OF OPERATIONS

Three Months Ended March 31, 2005 Compared to Three Months Ended March 31, 2004

Revenue

        Total Company. Revenue increased $19.0 million, or 14%, to $152.4 million from $133.4 million for the same period of the prior year. The following table presents revenue by operating segment:

For the Three Months Ended March 31,
Net Revenue (in thousands)	2005		2004		Dollar Change		Percentage Change			Percentage Change from Currency (1)			Percentage Change Net of Currency Effect
CAG	$	124,880	$	109,830	$	15,050		13	.7%		1	.1%		12	.6%
Water		12,806		11,854		952		8	.0%		1	.7%		6	.3%
FDG		14,740		11,733		3,007		25	.6%		3	.3%		22	.3%
Total Company	$	152,426	$	133,417	$	19,009		14	.2%		1	.3%		12	.9%

_________________

⁽¹⁾     Represents the percentage change in revenue attributed to the effect of changes in currency rates from the quarter ended March 31, 2004 to the quarter eneded March 31, 2005.

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        Companion Animal Group. Revenue for CAG increased $15.1 million, or 14%, to $124.9 million from $109.8 million for the same period of the prior year. Laboratories acquired during 2004 contributed approximately 7% to CAG revenue growth during the quarter. The following table presents revenue by product and service categories for CAG:

For the Three Months Ended March 31,
Net Revenue (in thousands)	2005		2004		Dollar Change		Percentage Change			Percentage Change from Currency (1)			Percentage Change Net of Currency Effect
Instruments and consumables	$	52,873	$	48,811	$	4,062		8	.3%		1	.9%		6	.4%
Rapid assay products		24,752		24,245		507		2	.1%		0	.6%		1	.5%
Laboratory and consulting services		36,544		27,105		9,439		34	.8%		0	.5%		34	.3%
Information products and services and digital radiography		7,461		7,328		133		1	.8%		0	.4%		1	.4%
Pharmaceutical products		3,250		2,341		909		38	.8%		0	.3%		38	.5%
Net CAG Revenue	$	124,880	$	109,830	$	15,050		13	.7%		1	.1%		12	.6%

_________________

⁽¹⁾     Represents the percentage change in revenue attributed to the effect of changes in currency rates from the quarter ended March 31, 2004 to the quarter ended March 31, 2005.

        The increase in sales of instruments and consumables was due mainly to increased sales volume of consumables. The timing of shipments between the fourth quarter of 2004 and the first quarter of 2005 for one of our consumables had a favorable impact of approximately 3% on the first quarter consumable growth rate. Sales volumes also increased due to higher domestic clinic-level sales of VetTest^® slides and, to a lesser extent, new tests launched in the third and fourth quarters of 2004; tubes used with our hematology instruments; and VetTest® slides sold outside of the U.S. Increased hematology instrument consumables sales volume was due primarily to an increase in our installed base of instruments during 2004.

        The increase in sales of rapid assay products was due primarily to increased domestic clinic-level sales volume of canine products. Rapid assay sales during the first quarter of 2004 were particularly strong due to various factors, including targeted marketing and sales efforts and the favorable impact from distributor inventory changes. Accordingly, sales growth during the first quarter of 2005 is lower in comparison. We anticipate the rapid assay growth rate to be in the 7% to 9% range through the balance of the year.

        The increase in sales of laboratory and consulting services resulted primarily from the inclusion of sales from laboratories acquired during 2004 and the first quarter of 2005 and, to a lesser extent, higher testing volume at established laboratories in the U.S. and the impact of price increases in the U.S. Growth in sales of laboratory services in 2005 relative to 2004 will continue to be positively affected by the inclusion of results from Vet Med Lab, a Germany-based veterinary reference laboratory acquired in November 2004. Laboratories acquired during 2004 contributed approximately 30% to laboratory and consulting services revenue growth during the quarter. For 2005, we expect incremental sales from Vet Med Lab of $20 to $25 million.

        The increase in sales of information products and services and digital radiography reflects increased sales of digital radiography instruments partly offset by decreased sales of computer systems products. The increase in digital radiography revenue is primarily due to an increase in the number of systems sold. The decrease in computer systems revenue is primarily due to lower sales volume of computer hardware upgrades and peripherals and a higher proportion of sales of lower priced computer systems.

        The increase in sales of pharmaceutical products resulted primarily from increased clinic-level demand, particularly for PZI Vet^® insulin.

        Water. Revenue for Water increased $1.0 million, or 8%, to $12.8 million from $11.9 million for the same period of the prior year. The increase resulted primarily from higher worldwide sales volume and, to a lesser extent, the favorable impact of currency exchange rates on sales outside the U.S, partly offset by lower average unit sales prices due to price competition, particularly in the U.S. and the United Kingdom. The favorable impact of currency exchange rates contributed an aggregate of $0.2 million, or 2%, to the increase in Water revenue.

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        Food Diagnostics Group. Revenue for FDG increased $3.0 million, or 26%, to $14.7 million from $11.7 million for the same period of the prior year. Businesses acquired during 2004 contributed approximately 11% to FDG revenue growth during the quarter. The following table presents revenue by product and service categories for FDG:

For the Three Months Ended March 31,
Net Revenue (in thousands)	2005		2004		Dollar Change		Percentage Change			Percentage Change from Currency (1)			Percentage Change Net of Currency Effect
Production animal products	$	10,862	$	7,898	$	2,964		37	.5%		3	.8%		33	.7%
Dairy testing products		3,878		3,835		43		1	.1%		2	.2%		(1	.1%)
Net FDG revenue	$	14,740	$	11,733	$	3,007		25	.6%		3	.3%		22	.3%

_________________

⁽¹⁾     Represents the percentage change in revenue attributed to the effect of changes in currency rates from the quarter ended March 31, 2004 to the quarter ended March 31, 2005.

        The increase in FDG revenue resulted primarily from higher livestock diagnostics sales volume in Europe, including sales attributable to Dr. Bommeli AG (“Bommeli”), a Switzerland-based manufacturer of production animal diagnostics acquired in the fourth quarter of 2004 and, to a lesser extent, the favorable impact of currency exchange rates on sales outside the U.S. Businesses acquired during 2004 contributed approximately 17% to production animal products revenue growth during the quarter. These increases were partly offset by lower average unit prices of certain production animal products and dairy testing products. The lower average unit prices were attributable to greater price competition in certain geographies.

Gross Profit

        Total Company. Gross profit increased $9.0 million, or 13%, to $76.1 million from $67.0 million for the same period of the prior year. As a percentage of total revenue, gross profit was approximately constant at 50%. The following table presents gross profit and gross profit percentage by operating segment:

For the Three Months Ended March 31,
Gross Profit (in thousands)	2005		Percent of Sales		2004		Percent of Sales		Dollar Change		Percentage Change
CAG	$	59,263		47.5%	$	52,076		47.4%	$	7,187		13.8%
Water		8,477		66.2%		7,993		67.4%		484		6.1%
FDG		8,340		56.6%		6,977		59.5%		1,363		19.5%
Total Company	$	76,080		49.9%	$	67,046		50.3%	$	9,034		13.5%

        Companion Animal Group. Gross profit for CAG increased $7.2 million, or 14%, to $59.3 million from $52.1 million for the same period of the prior year due primarily to increased sales volume across the CAG product lines. As a percentage of revenue, gross profit was approximately constant at 47% compared to the same period of the prior year. Gross profit benefited from productivity improvements related to our LaserCyte^® hematology instrument, including both service and manufacturing efficiencies, and, to a lesser extent, from the favorable impact of foreign currency rates on sales denominated in those currencies, net of foreign exchange hedge contract losses. These benefits were almost completely offset by product cost increases; higher laboratory costs of service, including costs associated with the start-up of new laboratories in the U.S.; write-downs of excess inventory; and service costs associated with our growing installed base of rental instruments. The LaserCyte^® service cost improvements during the quarter generated a modest favorable change in our estimated cost of product warranties for all placed instruments for which we have such future obligations, compared to an unfavorable change in actual and estimated costs during the same period of the prior year.

        Water. Gross profit for Water increased $0.5 million, or 6%, to $8.5 million from $8.0 million for the same period of the prior year due to increased sales volume, partly offset by a decrease in the gross profit percentage. As a percentage of Water revenue, gross profit decreased to 66% from 67% for the same period in the prior year. The decrease in gross profit percentage was attributable primarily to higher product costs and lower average unit sales prices, partly offset by the favorable impact of foreign currency rates on sales denominated in those currencies, net of foreign exchange hedge contract losses.

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        Food Diagnostics Group. Gross profit for FDG increased $1.4 million, or 20%, to $8.3 million from $7.0 million for the same period of the prior year due to increased sales volume, partly offset by a decrease in the gross profit percentage. As a percentage of FDG revenue, gross profit decreased to 57% from 59% for the same period in the prior year. The decrease in gross profit percentage was attributable primarily to higher net manufacturing costs and to the impact of the purchase accounting for finished goods acquired in connection with the acquisition of Bommeli in the fourth quarter of 2004, partly offset by the favorable impact of foreign currency rates on sales denominated in those currencies, net of foreign exchange hedge contract losses; lower royalty costs due to more favorable royalty rates on certain production animal diagnostic products; and higher relative sales of higher margin livestock products.

Operating Expenses and Operating Income

        Total Company. Total operating expenses increased $8.2 million to $49.9 million from $41.7 million for the same period of the prior year. As a percentage of revenue, operating expenses increased to 33% from 31% for the same period in the prior year. The following tables present operating expenses and operating income by operating segment:

For the Three Months Ended March 31,
Operating Expenses (in thousands)	2005		Percent of Sales		2004		Percent of Sales		Dollar Change			Percentage Change
CAG	$	40,375		32.3%	$	33,828		30.8%	$	6,547			19.4%
Water		2,973		23.2%		2,938		24.8%		35			1.2%
FDG		5,762		39.1%		4,054		34.6%		1,708			42.1%
Other		832		N/A		925		N/A		(93	)		(10.1%	)
Total Company	$	49,942		32.8%	$	41,745		31.3%	$	8,197			19.6%

Operating Income (in thousands)	2005			Percent of Sales		2004			Percent of Sales		Dollar Change			Percentage Change
CAG	$	18,888			15.1%	$	18,248			16.6%	$	640			3.5%
Water		5,504			43.0%		5,055			42.6%		449			8.9%
FDG		2,578			17.5%		2,923			24.9%		(345	)		(11.8%	)
Other		(832	)		N/A		(925	)		N/A		93			10.1%
Total Company	$	26,138			17.1%	$	25,301			19.0%	$	837			3.3%

        Companion Animal Group. Operating expenses for CAG increased $6.5 million, or 19%, to $40.4 million from $33.8 million for the same period of the prior year and, as a percentage of revenue, increased to 32% from 31% for the same period of the prior year. The increase was attributable to a 21% ($3.8 million) increase in sales and marketing expense, an 18% ($1.8 million) increase in general and administrative expense, and a 17% ($1.0 million) increase in research and development expense. The increase in sales and marketing expense resulted primarily from increased worldwide sales and sales support personnel and marketing program costs and, to a lesser extent, from incremental expenses to support the Vet Med Lab business acquired in the fourth quarter of 2004. The increase in general and administrative expense resulted primarily from expenses to support the Vet Med Lab business, comprised of general and administrative expenses of a recurring nature, amortization expense for intangible assets acquired and integration costs. To a lesser extent, the increase in general and administrative expenses was also attributable to higher spending on information technology, facilities and other corporate functions, and the unfavorable impact of exchange rates on foreign currency denominated expenses. The increase in research and development expense resulted primarily from increased spending to support our in-clinic diagnostic business for both instrumentation and rapid assays.

        Water. Operating expenses for Water increased less than $0.1 million, or 1%, to $3.0 million from $2.9 million for the same period of the prior year and, as a percentage of revenue, decreased to 23% from 25% for the same period in the prior year. There were no significant fluctuations in the nature and amounts of sales and marketing, general and administrative, or research and development expenses.

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        Food Diagnostics Group. Operating expenses for FDG increased $1.7 million, or 42%, to $5.8 million from $4.1 million for the same period of the prior year and, as a percentage of revenue, increased to 39% from 35% for the same period in the prior year. The net increase resulted from a 75% ($0.9 million) increase in general and administrative expense, a 22% ($0.4 million) increase in sales and marketing expense, and a 38% ($0.4 million) increase in research and development expense. The increase in general and administrative expense resulted primarily from amortization expense for intangible assets associated with the acquisition of Bommeli in the fourth quarter of 2004 and, to a lesser extent, from higher spending on information technology, facilities and other corporate functions, and from other general and administrative expenses of a recurring nature to support the additional activities associated with Bommeli. The increase in sales and marketing expense resulted primarily from expenses to support Bommeli and, to a lesser extent, from other increased international sales and sales support personnel and marketing program costs. Similarly, the increase in research and development expense was due primarily to Bommeli research and development activities and, to a lesser extent, to costs associated with the centralization of our European production animal diagnostics operations to Bern, Switzerland and related severance costs for the associated cessation of production in our Swedish facility, which is scheduled for the third quarter of 2005, and to increased spending in support of the launch of our HerdChek^® BSE Antigen Test Kit.

        Other. Operating expenses, consisting of corporate research and development, decreased $0.1 million, or 10%, to $0.8 million from $0.9 million in the same period of the prior year.

Interest Income

        Net interest income was $0.5 million for the three months ended March 31, 2005 compared to $0.7 million for the three months ended March 31, 2004. The decrease in interest income was due to lower invested cash balances partially offset by higher effective interest rates.

Provision for Income Taxes

        Our effective tax rate was 33.9% for the three months ended March 31, 2005. For the full year ended December 31, 2004, our effective tax rate was 29.7%, while it was 32.0% for the three months ended March 31, 2004. The majority of the reduction in the effective tax rate for the year ended December 31, 2004 compared to the three months ended March 31, 2004 resulted from the resolution of an Internal Revenue Service income tax audit through the year 2001. As a result of completing this audit, we reduced previously accrued taxes. Other rate reductions resulted from the release in 2004 of a valuation allowance on international deferred tax assets as a result of a foreign subsidiary demonstrating consistent sustained profitability and from changes in certain state and international tax estimates.

        The effective tax rate recorded for the three months ended March 31, 2005 increased to 33.9% from 32.0% for the three months ended March 31, 2004 primarily due to an international tax provision.

        The recently enacted American Jobs Creation Act of 2004 allows for a reduced rate of United States tax on qualifying repatriations of earnings held outside the United States. We are currently studying the impact of this provision and we have not made a final determination as to the amounts, if any, that will be repatriated. As such, the income tax effect of any repatriation cannot be estimated.

RECENT ACCOUNTING PRONOUNCEMENTS

        In December 2004, the Financial Accounting Standards Board (“FASB”) issued SFAS No. 123(R), “Share-Based Payment,” which is a revision of SFAS No. 123 and supersedes APB No. 25. SFAS No. 123(R) requires all share-based payments to employees, including grants of employee stock options, to be valued at fair value on the date of grant, and to be expensed over the applicable vesting period. Pro forma disclosure of the income statement effects of share-based payments is no longer an alternative. Implementation of SFAS No. 123(R) was originally required as of the beginning of the first interim or annual period that begins after June 15, 2005, however, the Securities and Exchange Commission amended the compliance date for public companies to the beginning of their next fiscal year that begins after June 15, 2005. Companies must also recognize compensation expense related to any awards that are not fully vested as of the amended effective date. Compensation expense for the unvested awards will be measured based on the fair value of the awards previously calculated in developing the pro forma disclosures in accordance with the provisions of SFAS No. 123. We plan to use the modified prospective application method and to adopt the standard on January 1, 2006.

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LIQUIDITY AND CAPITAL RESOURCES

        We fund the capital needs of our business through cash generated from operations. As of March 31, 2005 and December 31, 2004, we had $110.2 million and $137.3 million of cash and cash equivalents and short-term investments, respectively, and working capital of $201.3 million and $201.6 million, respectively. As of March 31, 2005 and December 31, 2004, we also had long-term investments, primarily in municipal bonds, of $12.0 million and $19.7 million, respectively. As of March 31, 2005 and December 31, 2004, we had total cash and cash equivalents, short-term investments and long-term investments of $122.2 million and $157.0 million, respectively.

        Effective January 1, 2003, we entered into a workers’ compensation insurance policy for U.S. employees under which we retain the first $0.25 million in claim liability per incident and up to specific limits, based on payroll, in claim liability in the aggregate. We renewed this workers’ compensation policy effective January 1, 2004, and entered into a similar workers’ compensation policy effective January 1, 2005. We are liable for up to $1.4 million, $3.0 million and approximately $2.5 million in aggregate claim liability for 2003, 2004 and 2005, respectively. We have recorded our estimated claim liability as of March 31, 2005 and December 31, 2004 based on claims incurred and the estimated ultimate cost to settle the claims. The insurance company administers and pays these claims, and we reimburse the insurance company for our portion of these claims. The insurance company provides insurance for claims above the individual occurrence and aggregate limits. In connection with these policies, we have outstanding letters of credit totaling $1.6 million to the insurance companies as security for these claims as of March 31, 2005.

        Cash provided by investing activities was $26.2 million for the three months ended March 31, 2005. The proceeds from sales of investment instruments provided cash of $32.1 million. We purchased approximately $4.5 million of fixed assets and $0.7 million of equipment leased to customers during the quarter ended March 31, 2005. We anticipate total capital expenditures in 2005 of $30 to $35 million. In March 2005, we utilized cash of $0.5 million to acquire certain assets of a Switzerland-based veterinary reference laboratory.

        Cash provided by operating activities was $0.3 million for the three months ended March 31, 2005. Cash of $10.7 million was used by an increase in accounts receivable due primarily to the seasonal increase in sales to distributors in anticipation of the beginning of the heartworm season and the timing of cash receipts from distributors. Cash of $7.2 million was used by a decrease in accrued liabilities (defined as accrued expenses, accrued employee compensation and related expenses, accrued taxes, accrued marketing and customer programs, and accrued warranty and extended maintenance reserves) attributable primarily to tax and compensation payments. Cash of $2.1 million was used by an increase in inventories. Cash of $1.7 million was used by a decrease in accounts payable. Cash of $1.0 million was generated from the income tax benefit obtained from the exercise of nonqualified stock options and disqualifying dispositions of incentive stock options by employees. As was the case in the first quarter of 2004, we expected the level of cash provided by operations during the first quarter of 2005 to be at its lowest level of the year. Receivables typically increase during the first quarter due to the beginning of the heartworm season, while payables and accrued expenses decline due to estimated tax payments and annual compensation related payments. We expect cash provided by operations to improve over the balance of 2005.

        As a percentage of revenue, spending for research and development activities in 2005 is expected to be slightly lower than 2004 levels as we will record a relatively higher proportion of our revenues from our laboratory services business, which does not incur significant research and development expenses.

        The slides sold for use in our VetTest^® instruments are purchased under an agreement with a supplier at fixed prices. Under this agreement, we are required to make additional slide purchases in 2005 of $34.7 million.

        We purchase electrolyte instruments, components and consumables at fixed prices under an agreement with a supplier. Under this agreement, we are required to make aggregate minimum purchases of $4.1 million per year of electrolyte instruments, components and consumables in 2005 and 2006. Under this agreement, we are required to make additional purchases in 2005 of $3.2 million.

        The Board of Directors has authorized the repurchase of up to 14,000,000 shares of our common stock in the open market or in negotiated transactions. During the three months ended March 31, 2005, we repurchased 530,800 shares of common stock for $29.5 million at an average price of $55.65 per share.

        We believe that current cash and cash equivalents, short-term investments, long-term investments and funds generated from operations will be sufficient to fund our operations and capital purchase requirements.

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FUTURE OPERATING RESULTS

        The future operating results of IDEXX involve a number of risks and uncertainties. Actual events or results may differ materially from those discussed in this report. Factors that could cause or contribute to such differences include, but are not limited to, the factors discussed below, as well as those discussed elsewhere in this report.

IDEXX’s Future Growth and Profitability Depend on Several Factors

        The future success of our business depends upon our ability to successfully implement various strategies, including:

•  Developing, manufacturing and marketing new products with new features and capabilities, including pharmaceutical products; a new clinical chemistry instrument; and rapid assay, water testing and production animal diagnostic products, as well as improving and enhancing existing products, including the LaserCyte^® system;

• Expanding our market by increasing use of our products by our customers;

• Strengthening our sales and marketing activities both within the U.S. and in geographies outside of the U.S.;

•  Developing and implementing new technology development and licensing strategies; and identifying, completing and integrating acquisitions that enhance our existing businesses or create new business areas for us; and

• Reducing the costs of manufacturing our products and providing services through operating efficiencies.

        However, we may not be able to successfully implement some or all of these strategies and increase or sustain our rate of growth or profitability.

IDEXX’s Markets Are Competitive and Subject to Rapid and Substantial Technological Change

        We face intense competition within the markets in which we sell our products and services. We expect that future competition will become even more intense, and that we will have to compete with changing and improving technologies. Some of our competitors and potential competitors, including large pharmaceutical companies, have substantially greater capital, manufacturing, marketing, and research and development resources than we do.

IDEXX’s Products and Services Are Subject to Various Government Regulations

        In the U.S., the manufacture and sale of our products are regulated by agencies such as the U.S. Department of Agriculture (“USDA”), U.S. Food and Drug Administration (“FDA”) and the U.S. Environmental Protection Agency (“EPA”). Most diagnostic tests for animal health applications, including our canine, feline, poultry and livestock tests, must be approved by the USDA prior to sale. Our water testing products must be approved by the EPA before they can be used by customers in the U.S. as a part of a water quality monitoring program required by the EPA. Our pharmaceutical and dairy testing products require approval by the FDA. The manufacture and sale of our products are subject to similar laws in many foreign countries. Any failure to comply with legal and regulatory requirements relating to the manufacture and sale of our products in the U.S. or in other countries could result in fines and sanctions against us or removals of our products from the market, which could have a material adverse effect on our results of operations.

        We have entered into an agreement with the FDA under which we have agreed, among other things, to perform specified lot release and stability testing of our SNAP^® beta-lactam dairy-testing products and to provide related data to the FDA. If the FDA were to determine that one or more lots of product failed to meet applicable criteria for product performance or stability, the FDA could take various actions, including requiring us to recall products or restricting our ability to sell these products. Sales of dairy antibiotic residue-testing products were $3.9 million for the three months ended March 31, 2005 and $15.7 million for the year ended December 31, 2004.

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        Commercialization of animal health pharmaceuticals in the U.S. requires prior approval by the FDA. To obtain such approvals, we are required to submit substantial clinical, manufacturing and other data to the FDA. Regulatory approval for products submitted to the FDA may take several years and following approval, the FDA continues to regulate all aspects of the manufacture, labeling, storage, record keeping and promotion of pharmaceutical products. Failure to obtain, or delays in obtaining, FDA approval for new pharmaceutical products would have a negative impact on our future growth.

Changes in Veterinary Medical Practices Could Negatively Affect Operating Results

        The market for diagnostic tests could be negatively impacted by the introduction or broad market acceptance of vaccines or preventatives for the diseases and conditions for which we sell diagnostic tests and services. Eradication or substantial declines in the prevalence of certain diseases also could lead to a decline in diagnostic testing for such diseases. Such a decline could have a material adverse effect on our results of operations.

IDEXX’s Success Is Heavily Dependent Upon Its Proprietary Technologies

        We rely on a combination of patent, trade secret, trademark and copyright laws to protect our proprietary rights. If we do not have adequate protection of our proprietary rights, our business may be affected by competitors who develop substantially equivalent technologies that compete with us.

        We cannot ensure that we will obtain issued patents, that any patents issued or licensed to us will remain valid, or that any patents owned or licensed by us will provide protection against competitors with similar technologies. Even if our patents cover products sold by our competitors, the time and expense of litigating to enforce our patent rights could be substantial, and could have a material adverse effect on our results of operations. In addition, expiration of patent rights could result in substantial new competition in the markets for products previously covered by those patent rights.

        In the past, we have received notices claiming that our products infringe third-party patents and we may receive such notices in the future. Patent litigation is complex and expensive and the outcome of patent litigation can be difficult to predict. We cannot ensure that we will win a patent litigation case or negotiate an acceptable resolution of such a case. If we lose, we may be stopped from selling certain products and/or we may be required to pay damages and/or ongoing royalties as a result of the lawsuit. Any such adverse result could have a material adverse effect on our results of operations.

IDEXX Purchases Materials for Its Products from a Limited Number of Sources

        We currently purchase certain products and materials from single sources or a limited number of sources. Some of the products that we purchase from these sources are proprietary, and, therefore, may not be available from other sources. These products include our VetTest^® chemistry, QBC^® VetAutoread™ hematology, VetLyte^® electrolyte, and VetStat™ blood gas analyzers and related consumables, digital radiography systems, active ingredients for pharmaceutical products, including Navigator^® paste, and certain components of our SNAP^® rapid assay devices, water testing products and LaserCyte® systems. If we are unable to obtain adequate quantities of these products in the future, we could face cost increases or reductions or delays in product shipments, which could have a material adverse effect on our results of operations.

        The slides sold for use in our VetTest^® instruments are purchased under an agreement with a supplier at fixed prices. Under this agreement we are required to purchase a minimum of $122.8 million of slides through 2010. To the extent that slides purchased under the contract exceed demand for the slides, we may incur losses in the future under this agreement. To the extent that we are unable to maintain current pricing levels on sales of slides to our customers, our profits on slide sales could decline because we purchase slides at fixed prices.

        Electrolyte instruments, components and consumables are purchased under an agreement with a supplier at fixed prices. Under this agreement we are required to make aggregate minimum purchases of $4.1 million annually through 2006, including $3.2 million by December 31, 2005. To the extent that instruments, components and consumables purchased under the contract exceed the demand for them, we may incur losses in the future under this agreement. To the extent that we are unable to maintain current pricing levels on sales of these products to our customers, our profits could decline because we purchase these products at fixed prices.

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IDEXX’s Biologic Products Are Complex and Difficult to Manufacture

        Many of our rapid assay and production animal diagnostic products are biologics, which are products that are comprised of materials from living organisms, such as antibodies, cells and sera. Manufacturing biologic products is highly complex. Unlike products that rely on chemicals for efficacy (such as most pharmaceuticals), biologics are difficult to characterize due to the inherent variability of biological materials. Difficulty in characterizing biological materials limits the precision of specifications for these materials, which creates greater risk in the manufacturing process. We attempt to mitigate risk associated with the manufacture of biologics by utilizing multiple vendors, manufacturing some of these materials ourselves and maintaining substantial inventories of materials that have demonstrated the appropriate characteristics. However, there can be no assurance that we will be able to maintain adequate sources of biological materials or that biological materials that we maintain in inventory will yield finished products that satisfy applicable product release criteria. Our inability to obtain necessary biological materials or to successfully manufacture biologic products that incorporate such materials could have a material adverse effect on our results of operations.

IDEXX’s Sales Are Dependent on Distributor Purchasing Patterns

We sell many of our products, including substantially all of the rapid assays and instrument consumables sold in the U.S., through distributors. Because significant product sales are made to a limited number of customers, unanticipated changes in the timing and size of distributor purchases can have a negative effect on quarterly results. Our financial performance, therefore, is subject to an unexpected downturn in product demand and may be unpredictable.

        Distributors of veterinary products have entered into business combinations resulting in fewer distribution companies. Two of the largest distributors of our veterinary products have announced that they have entered into an agreement to combine their businesses. Consolidation within distribution channels would increase our customer concentration level, which could increase the risks described in the preceding paragraph.

International Revenue Accounts for a Significant Portion of IDEXX’s Total Revenue

        For the three months ended March 31, 2005 and the year ended December 31, 2004, 35% and 32%, respectively, of our revenue was attributable to sales of products and services to customers outside the U.S. Various risks associated with foreign operations may impact our international sales. Possible risks include fluctuations in the value of foreign currencies, disruptions in transportation of our products, the differing product and service needs of foreign customers, difficulties in building and managing foreign operations, import/export duties and quotas, and unexpected regulatory, economic or political changes in foreign markets. Prices that we charge to foreign customers may be different than the prices we charge for the same products in the U.S. due to competitive, market or other factors. As a result, the mix of domestic and international sales in a particular period could have a material impact on our results for that period. In addition, many of the products for which our selling price may be denominated in foreign currencies are manufactured, sourced, or both, in the U.S. and our costs are incurred in U.S. dollars. We utilize nonspeculative forward currency exchange contracts to mitigate foreign currency exposure, however, an appreciation of the U.S. dollar relative to the foreign currencies in which we sell these products would reduce our gross margins.

The Loss of Our President, Chief Executive Officer and Chairman Could Adversely Affect Our Business

        We rely on the management and leadership of Jonathan W. Ayers, our President, Chief Executive Officer and Chairman. We do not maintain key man life insurance coverage for Mr. Ayers. The loss of Mr. Ayers could have a material impact on our business.

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We Could Be Subject to Class Action Litigation Due to Stock Price Volatility, which, if Occurs, Could Result in Substantial Costs or Large Judgments Against Us

        The market for our common stock may experience extreme price and volume fluctuations, which may be unrelated or disproportionate to our operating performance or prospects. In the past, securities class action litigation has often been brought against companies following periods of volatility in the market prices of their securities. We may be the target of similar litigation in the future. Securities litigation could result in substantial costs and divert our management’s attention and resources, which could have a negative effect on our business, operating results and financial condition.

If Our Quarterly Results of Operations Fluctuate, This Fluctuation May Cause Our Stock Price to Decline, Resulting in Losses to You

        Our prior operating results have fluctuated due to a number of factors, including seasonality of certain product lines; changes in our accounting estimates; the impact of acquisitions; timing of distributor purchases, product launches, research and development expenditures, litigation and claim-related expenditures; changes in competitors’ product offerings; and other matters. Similarly, our future operating results may vary significantly from quarter to quarter due to these and other factors, many of which are beyond our control. If our operating results do not meet the expectations of market analysts or investors in future periods, our stock price may fall.

Future Operating Results Could Be Materially Affected By the Resolution of Various Uncertain Tax Positions and Adversely Affected by Potential Changes to Tax Incentives

        In the ordinary course of our business, there are many transactions and calculations where the ultimate tax determination is uncertain. Significant judgment is required in determining our worldwide provision for income taxes and our income tax filings are regularly under audit by tax authorities. Management believes that it has adequately accrued for all potential tax liabilities and, although we believe our tax estimates are reasonable, the final determination of tax audits could be materially different than that which is reflected in historical income tax provisions and accruals. Additionally, we benefit from certain tax incentives offered by various jurisdictions, some of which are scheduled to expire at the end of 2005. If we are unable to renew such incentives, the expiration of these benefits could have a negative effect on future earnings.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

        Our financial market risk consists primarily of foreign currency exchange rate risk. We operate subsidiaries in 16 foreign countries and transact business in local currencies. We attempt to hedge the majority of our cash flow on intercompany sales to minimize foreign currency exposure.

        The primary purpose of our foreign currency hedging activities is to protect against the volatility associated with foreign currency transactions. Corporate policy prescribes the range of allowable hedging activity. We primarily utilize forward exchange contracts with a duration of less than 18 months. Gains and losses related to qualifying hedges of foreign currency from commitments or anticipated transactions are deferred in prepaid expenses or accruals and are included in the basis of the underlying transaction. Our hedging strategy is consistent with prior periods. Our hedging strategy provides that we employ the full amount of our hedges for the succeeding year at the conclusion of our budgeting process for that year, which is complete by the end of the preceding year. Quarterly, we enter into contracts to hedge incremental portions of anticipated foreign currency transactions for the following twelve months. Accordingly, our risk with respect to foreign currency exchange rate fluctuations may vary throughout each annual cycle. As of March 31, 2005, we had $0.9 million in unrealized losses on foreign exchange contracts designated as hedges recorded in other comprehensive income, which is net of $0.5 million in taxes.

Item 4. Controls and Procedures

    (a)        Evaluation of Disclosure Controls and Procedures. The Company’s management, with the participation of the Company’s Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of March 31, 2005. Based on this evaluation, the Company’s Chief Executive Officer and Chief Financial Officer concluded that, as of March 31, 2005, the Company’s disclosure controls and procedures were (1) designed to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to the Company’s Chief Executive Officer and Chief Financial Officer by others within those entities, particularly during the period in which this report was being prepared and (2) effective, in that they provide reasonable assurance that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Securities and Exchange Commission.

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    (b)        Changes in Internal Controls. No change in the Company’s internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) occurred during the fiscal quarter ended March 31, 2005 that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting.

PART II OTHER INFORMATION

Item 2. Changes in Securities, Use of Proceeds and Issuer Purchases of Equity Securities

        During the three months ended March 31, 2005, we repurchased our shares as described below:

Period	Total Number of Shares Purchased (a)		Average Price Paid per Share (b)		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (c)		Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs (d)
January 1, 2005 to January 31, 2005		93,000	$	55.16		93,000		1,952,230
February 1, 2005 to February 28, 2005		186,800		56.92		186,800		1,765,430
March 1, 2005 to March 31, 2005		251,000		54.90		251,000		1,514,430
Total		530,800	$	55.65		530,800		1,514,430

        Our Board of Directors has approved the repurchase of up to 14,000,000 shares of our common stock in the open market or in negotiated transactions. The plan was approved and announced on August 13, 1999 and subsequently amended on October 4, 1999, July 21, 2000, October 20, 2003, and October 12, 2004, and does not have a specified expiration date. The repurchases made during the three months ended March 31, 2005 were made in open market transactions. There were no other repurchase plans outstanding during the three months ended March 31, 2005, and no repurchase plans expired during the period.

Item 6. Exhibits

Exhibits

4.1 Amendment No. 1 to Amended and Restated Rights Agreement, dated as of March 8, 2005, between the Company and American Stock Transfer & Trust Company as Rights Agent (filed as Exhibit No. 4.1 to Current Report on Form 8-K filed on March 9, 2005, File No. 0-19271, and incorporated herein by reference).

31.1 Certification by Chief Executive Officer.

31.2 Certification by Vice President, Chief Financial Officer and Treasurer.

32.1  Certification by Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2  Certification by Vice President, Chief Financial Officer and Treasurer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

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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.

	IDEXX LABORATORIES, INC.
	/s/Merilee Raines
Date: May 5, 2005	Merilee Raines Vice President, Chief Financial Officer and Treasurer (Principal Financial Officer)

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Exhibit Index

Exhibit No. Description

4.1 Amendment No. 1 to Amended and Restated Rights Agreement, dated as of March 8, 2005, between the Company and American Stock Transfer & Trust Company as Rights Agent (filed as Exhibit No. 4.1 to Current Report on Form 8-K filed on March 9, 2005, File No. 0-19271, and incorporated herein by reference).

31.1 Certification by Chief Executive Officer.

31.2 Certification by Vice President, Chief Financial Officer and Treasurer.

32.1 Certification by Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2  Certification by Vice President, Chief Financial Officer and Treasurer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

EX-31

CERTIFICATION

Exhibit 31.1

        I, Jonathan W. Ayers, certify that:

1) I have reviewed this quarterly report on Form 10-Q for the quarter ended March 31, 2005 of IDEXX Laboratories, Inc. (the “Quarterly Report”);

2) Based on my knowledge, this Quarterly 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 Quarterly Report;

3) Based on my knowledge, the financial statements and other financial information included in this Quarterly 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 Quarterly Report;

4) The registrant’s other certifying officers 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 Rules 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 Quarterly 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 Quarterly Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report, based on such evaluation; and

d) disclosed in this Quarterly Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter 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 officers 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 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: May 5, 2005 /s/Jonathan W. Ayers
Jonathan W. Ayers
President and Chief Executive Officer

EX-31

CERTIFICATION

Exhibit 31.2

        I, Merilee Raines, certify that:

1) I have reviewed this quarterly report on Form 10-Q for the quarter ended March 31, 2005 of IDEXX Laboratories, Inc. (the “Quarterly Report”);

2) Based on my knowledge, this Quarterly 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 Quarterly Report;

3) Based on my knowledge, the financial statements and other financial information included in this Quarterly 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 Quarterly Report;

4) The registrant’s other certifying officers 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 Rules 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 Quarterly 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 Quarterly Report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this Quarterly Report, based on such evaluation; and

d) disclosed in this Quarterly Report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter 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 officers 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 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: May 5, 2005 /s/Merilee Raines
Merilee Raines
Vice President, Chief Financial Officer and Treasurer

EX-32

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C.

SECTION 1350

AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Quarterly Report on Form 10-Q of IDEXX Laboratories, Inc. (the “Company”) for the quarter ended March 31, 2005 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

	/s/Jonathan W. Ayers
May 5, 2005	Jonathan W. Ayers President and Chief Executive Officer

A signed original of this written statement required by Section 906, has been provided to IDEXX Laboratories, Inc. and will be retained by IDEXX Laboratories, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C.

SECTION 1350

AS ADOPTED BY

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the Quarterly Report on Form 10-Q of IDEXX Laboratories, Inc. (the “Company”) for the quarter ended March 31, 2005 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned certifies, pursuant to 18 U.S.C. Section 1350, as adopted by Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

	/s/Merilee Raines
May 5, 2005	Merilee Raines Vice President, Chief Financial Officer and Treasurer

A signed original of this written statement required by Section 906, has been provided to IDEXX Laboratories, Inc. and will be retained by IDEXX Laboratories, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.