UpDate - Vol. 15, No. 30, Page FB-3 May 2, 1996 Attention Blue Cross Blue Shield Subscribers Reminder: Effective July 1, 1996, the sole provider for your laboratory services is LabCorp. All Blue Cross and Blue Shield subscribers with Basic, Comprehensive, Staff Model HMO and Independent Practice Association (Total Health Plus) coverages must use a LabCorp facility in order to receive full benefits.