LabCorp Extends Tender Offer for All Outstanding Shares of Orchid Cellmark

Laboratory Corporation of America® Holdings

today announced that LabCorp is extending until 5:00 p.m., New York City time, on August 12, 2011, LabCorp's previously announced cash tender offer for all outstanding shares of the common stock of Orchid Cellmark Inc.

. On May 17, 2011, LabCorp received a request from the Federal Trade Commission, or the FTC, for additional information under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, applicable to the acquisition of Orchid by LabCorp. LabCorp previously extended its tender offer to July 15, 2011. LabCorp is continuing to cooperate with the FTC's request for additional information and is consequently further extending the expiration of the tender offer.