Unit of Measurement

Drug class and cutoff concentrations*:
Amphetamines/Methamphetamines (1000 ng/mL, *500 ng/mL),
Barbiturates (200 ng/mL, *150 ng/mL ),
Benzodiazepines (200 ng/mL, *100 ng/mL),
Buprenorphine (10 ng/mL),
Cocaine metabolite (300 ng/mL, *150 ng/mL),
Fentanyl (1 ng/mL),
Methadone (300 ng/mL, *150 ng/mL),
Opiates (300 ng/mL, *150 ng/mL),
Synthetic Opioids (100 ng/mL, *75 ng/mL),
Cannabinoids (50 ng/mL)

*For pediatric patients <13 years old, more sensitive thresholds are employed to trigger confirmatory drug testing by mass spectrometry. Screen results above these thresholds are preliminary and are always sent for confirmation testing.