Table 2.
Drug detection windows and cut-offs for urine and hair testing
| Drug class | Detection window | Confirmation cut-off | |
| URINE | Cocaine (COC) | 2–4 Days | 300 ng/mL |
| Marijuana (THC) | 15–30 Days | 50 ng/mL | |
| Opiates (OPI) | 2–4 Days | 2000 ng/mL | |
| Amphetamines (AMP) | 2–4 Days | 1000 ng/mL | |
| Methamphetamines (mAMP) | 3–5 Days | 1000 ng/mL | |
| Phencyclidine (PCP) | 7–14 Days | 25 ng/mL | |
| Benzodiazepines (BZO) | 3–7 Days | 300 ng/mL | |
| Barbiturates (BAR) | 4–7 Days | 300 ng/mL | |
| Methadone (MTD) | 3–5 Days | 300 ng/mL | |
| Tricyclic antidepressants (TCA) | 1000 ng/mL | ||
| Oxycodone | 2–4 Days | 100 ng/mL | |
| Propoxyphene | 1–2 Days | 300 ng/mL | |
| Buprenorphine (BUP; Suboxone, Subutex) | 2–3 Days | 10 ng/mL | |
| HAIR | Marijuana (THC) | Up to 90 days | |
| Amphetamines (AMP) | Up to 90 days | ||
| Cocaine (COC) | Up to 90 days | ||
| Opiates (OPI) | Up to 90 days | ||
| Phencyclidine (PCP) | Up to 90 days |