BURLINGTON, N.C., Sept. 19 /PRNewswire-FirstCall/ -- Laboratory Corporation of America® Holdings (LabCorp®) (NYSE: LH - News) announced today that for the period of September 12, 2006 to March 11, 2007, its $744 million in zero coupon subordinated Liquid Yield Option(TM) Notes (LYONs) due 2021 will, subject to the terms of the LYONs, accrue contingent cash interest at a rate of no less than 0.125% of the average market price of a LYON for the five trading days ended September 7, 2006, in addition to the continued accrual of the original issue discount.