Parkway Clinical Laboratories (PCL) is an emerging national CLIA-certified clinical reference laboratory performing routine and esoteric diagnostic testing with a focus on oral fluid substance of abuse screening in workplace environments (settings or arenas). Conveniently located in Bensalem, Pa., our primary facility is situated in the northeast suburbs between downtown Philadelphia and the countryside of Bucks County. The laboratory has been a trusted partner delivering in-vitro diagnostic services for nearly four decades