LabCorp Completes Acquisition of MEDTOX

Laboratory Corporation of America® Holdings

today announced the completion of its acquisition of MEDTOX Scientific, Inc.

, effective July 31, 2012. At a special meeting held on July 31, 2012, MEDTOX's stockholders approved the acquisition and the transaction closed promptly thereafter. After the close of the Nasdaq Global Select Market on July 31, 2012, trading in MEDTOX common stock ceased, and the listing of MEDTOX's common stock was suspended. MEDTOX stockholders will receive a letter of transmittal from American Stock Transfer & Trust Company LLC as paying agent with instructions on how to cash in their shares of MEDTOX common stock.