CLIA Compliance and CAP Proficiency Testing

All Quest Diagnostics' testing locations are subject to Clinical Laboratory Improvement Amendments of 1988 (CLIA-88) certification and maintain current CLIA licenses. Quest Diagnostics' main laboratories are accredited by the College of American Pathologists (CAP).

Professional Accreditation and Licenses
Quest Diagnostics performs services in all 50 states and the District of Columbia, Puerto Rico, Mexico and the United Kingdom.

Please refer to the list provided of accreditation and license information for each of our main laboratories. Quest Diagnostics has never experienced a final denial revocation, limitation, suspension, probation or voluntary relinquishing of a license, certification or accreditation.

Quest Diagnostics has six Forensic Drug Testing Labs certified by SAMHSA, accredited by the College of American Pathologists, Forensic Urine Drug Testing program: Atlanta, GA; Irving TX; Las Vegas NV; Norristown, PA; Schaumburg, IL; and Van Nuys, CA.