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

July 22,2004
------------------
(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         (Commission          (IRS Employer
jurisdiction of         File Number)         Identification
incorporation)                                   Number)


358 SOUTH MAIN STREET, BURLINGTON, NORTH CAROLINA 27215
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(Address of principal executive offices)

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


ITEM 12. Results of Operations and Financial Conditions

On July 22, 2004, Laboratory Corporation of America -Registered
Trademark- Holdings (LabCorp -Registered Trademark-)(NYSE:LH) issued
a press release announcing its results for the quarter ended
June 30, 2004.  A copy of the press release is attached hereto
as Exhibit 99.1 and is incorporated by reference herein.




SIGNATURES

Pursuant to the requirements of the Securities and
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/ BRADFORD T. SMITH
                  ----------------------------------
                      Bradford T. Smith
                      Executive Vice President
                      and Secretary


Date: July 22, 2004


                                         EXHIBIT INDEX

   Exhibit                      Description
--------------     ------------------------------------
     99.1          Press Release dated July 22, 2004