UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

August 1, 2012

(Date of earliest event reported)

LABORATORY CORPORATION OF

AMERICA HOLDINGS

(Exact Name of Registrant as Specified in its Charter)

Delaware	1-11353	13-3757370
(State or other jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)

358 South Main Street,
Burlington, North Carolina	27215	336-229-1127
(Address of principal executive offices)	(Zip Code)	(Registrant’s telephone number including area code)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[ ] Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 7.01 Regulation FD Disclosure

On August 1, 2012, Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH) announced the completion of its acquisition of MEDTOX Scientific, Inc. (NASDAQ: MTOX), effective July 31, 2012.

At a special meeting held on July 31, 2012, MEDTOX's stockholders approved the acquisition and the transaction closed promptly thereafter. After the close of the Nasdaq Global Select Market on July 31, 2012, trading in MEDTOX common stock ceased, and the listing of MEDTOX's common stock was suspended. MEDTOX stockholders will receive a letter of transmittal from American Stock Transfer & Trust Company LLC as paying agent with instructions on how to cash in their shares of MEDTOX common stock.

Exhibits

99.1 Press Release dated August 1, 2012

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 hereunto duly authorized.

LABORATORY CORPORATION OF AMERICA HOLDINGS

Registrant

By:	/s/ F. SAMUEL EBERTS III
	F. Samuel Eberts III
	Chief Legal Officer and Secretary

August 1, 2012