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

           March 19, 2007           
(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 communications 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 March 19, 2007, Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH), announced that for the period of March 12, 2007 to September 11, 2007, its zero coupon subordinated Liquid Yield Option™ Notes due 2021 (LYONs) and Zero Coupon Convertible Subordinated Notes due 2021 (Zero Coupon Notes) will, subject to the terms of the LYONs and Zero Coupon Notes, accrue contingent cash interest at a rate of no less than 0.125% of the average market price of a LYON or Zero Coupon Note, as applicable, for the five trading days ended March 7, 2007, in addition to the continued accrual of the original issue discount. Contingent cash interest, which the Company has determined to be approximately $1.22 per Note, will be payable to holders of the LYONs or Zero Coupon Notes as of the record date, which is August 27, 2007. The payment of contingent cash interest is expected to be made on September 11, 2007.

Exhibits

99.1 Press Release dated March 19, 2007

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)
 		  
Date: March 20, 2007  By:   /s/Bradford T. Smith    
    Bradford T. Smith, Executive Vice President
and Secretary