Urine Testing Panels & Cutoffs

Quest Diagnostics

Urine testing panels and cutoffs

Urine drug testing, one of the most common screening methods, is an accurate and reliable way to detect drug use that occurred within the past 72 hours.

Drug testing is performed at all three of our Substance Abuse and Mental Health Services Administration (SAMHSA)-certified laboratories. Quest Diagnostics offers a variety of drug test panels and cutoff levels in addition to the federally-mandated SAMHSA / U.S. Department of Transportation (DOT) 5-drug panel.


Quest Diagnostics participates in rigorous laboratory proficiency testing. All of our drug testing laboratories hold and maintain Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), SAMHSA, and College of American Pathologists (CAP) certification as well as any applicable state licensure. We are committed to the highest standards of quality.

Broad testing menu

Our most commonly requested urine drug test is a 5-panel that screens for the presence of the following drugs.

Drug group EIA screen cutoff level*
GC/MS confirmation
(amphetamine and 
1,000 500
Cocaine metabolite 300 150
Marijuana metabolites 50 15
Opiates (codeine and
2,000 2,000
Phencyclidine 25 25

* These are the most common cutoff levels; alternate cutoff levels may be available.

** Nanograms per milliliter; the above cutoff levels, list of analytes and test methodologies are subject to change when required by applicable government regulations or guidelines.

Alcohol Testing

Offered as laboratory-based urine tests, our alcohol tests provide rapid, accurate, reliable results.

Download our Drug Testing Solutions At-A-Glance brochure with a matrix comparing urine, hair, instant, and oral fluid drug testing.
To get started with Quest today, call 1.800.877.7484 or contact us online.