Laboratory Corporation of America Holdings (LabCorp) has entered into a definitive agreement to acquire Clearstone Central Laboratories, a global provider of central lab services for late-stage clinical trials. The transaction, subject to customary closing conditions, is expected to close 2Q11. Terms of the agreement were not disclosed. The acquisition provides LabCorp with a global network of central labs and Clearstone’s clinical trials management system, APOLLO CLPM, which provides realtim...