Drug Testing Laboratory

A drug testing laboratory is a medical laboratory certified to conduct drug tests. Some of these laboratories also conduct other types of medical tests. Laboratories follow procedures to manage custody and control of test specimens.

Laboratories administer requested "test panels". A "certifying scientist" at the lab reviews and certifies the result. Under U.S. DOT processes, the result is passed on to an independent medical review officer (MRO) for interpretation and certification.