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 April 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 ------------------------------------------------------- (Address of principal executive offices) 336-229-1127 ------------ (Registrant's telephone number, including area code) ITEM 12. Results of Operations and Financial Conditions On April 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 March 31, 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: April 22, 2004 EXHIBIT INDEX Exhibit Description -------------- ------------------------------------ 99.1 Press Release dated April 22, 2004