What ng/mL cutoff level is mandated by SAMHSA for cocaine metabolite screening on workplace urine drug tests?
Short answer
SAMHSA mandates an initial screening cutoff level of 150 ng/mL for cocaine metabolite in workplace urine drug tests, followed by a 100 ng/mL confirmatory laboratory threshold. This standard targets benzoylecgonine to detect cocaine use within a two-to-four-day window. Workplace testing programs must verify point-of-care screening devices use this 150 ng/mL threshold rather than older 300 ng/mL limits to maintain full federal compliance.
The Substance Abuse and Mental Health Services Administration mandates an initial screening cutoff level of 150 ng/mL for cocaine metabolite in workplace urine drug tests, followed by a 100 ng/mL confirmatory cutoff.
Workplace compliance programs rely on standardized thresholds to balance screening sensitivity against accidental exposure risks. In federal guidelines revised in 2010, the Substance Abuse and Mental Health Services Administration (SAMHSA) lowered the initial screening cutoff from 300 ng/mL to 150 ng/mL to extend the detection window by up to 24 hours.
If you only do one thing: Check that your point-of-care urine drug screen panels specify a 150 ng/mL threshold for benzoylecgonine to align with current federal workplace standards.
- Primary target analyte: Testing measures benzoylecgonine (a chemical byproduct formed when the liver processes cocaine) rather than parent cocaine, because the metabolite remains detectable in urine for 2 to 4 days.
- Initial screening cutoff: Immunoassay screening cups and rapid test cassettes report a presumptive positive result when benzoylecgonine concentrations reach or exceed 150 ng/mL (nanograms per milliliter, a standard liquid measurement equal to one billionth of a gram per milliliter).
- Confirmatory test cutoff: Accredited laboratories use gas chromatography-mass spectrometry (a high-precision machine process that separates and identifies individual chemical compounds) to confirm screening results at a 100 ng/mL threshold.
- Standard detection window: Urine testing detects cocaine metabolite concentrations above the 150 ng/mL limit for approximately 48 to 72 hours after single use, and up to 96 hours following chronic use.
- Panel configuration standard: SAMHSA-regulated testing mandates this 150 ng/mL cocaine screen as part of the standard 5-panel workplace drug testing profile alongside amphetamines, opioids, phencyclidine (PCP), and marijuana.
- Watch out for: Purchasing legacy 300 ng/mL rapid screening devices, which fail to detect low-level metabolite concentrations between 150 and 299 ng/mL and do not meet federal compliance rules.
- Watch out for: Treating point-of-care rapid screening lines as legally final actions before sending presumptive positive samples to a certified laboratory for secondary confirmation.
- Watch out for: Specimen dilution or adulteration, which can lower metabolite concentrations below 150 ng/mL and requires verifying sample temperature between 90°F and 100°F within 4 minutes of collection.
Review your clinic or facility inventory to verify that all in-stock urine screening cups list a 150 ng/mL benzoylecgonine cutoff. For questions regarding specimen validity or formal workplace determinations, consult a certified Medical Review Officer.