Drug Duration
**NOTE: This chart is for reference only and gives approximate detection periods for each substance by test type. The ranges depend on amount and frequency of use, metabolic rate, age, overall health, drug tolerance, and urine pH.
| Drug | Cut-Off Level | Approximate Detection Time in Urine | Approximate Detection Time in Saliva |
| Amphetamine (AMP) | 1,000 ng/ml | 2-4 days | 1-3 days |
| Barbiturates (BAR) | 300 ng/ml | 4-7 days | — |
| Benzodiazepines (BZO) | 300 ng/ml | 3-7 days | — |
| Cocaine (COC) | 300 ng/ml | 2-4 days | 1-3 days |
| Ecstasy (MDMA) | 500 ng/ml | 1-3 days | — |
| Methadone (MTD) | 300 ng/ml | 3-5 days | — |
| Methamphetamine (MET) | 1,000 ng/ml | 3-5 days | 1-3 days |
| Opiates (MOR) | 300 ng/ml | 2-4 days | — |
| Opiates (OPI) | 2,000 ng/ml | 2-4 days | 1-3 days |
| Phencyclidine (PCP) | 25 ng/ml | 7-14 days | 1-3 days |
| Marijuana (THC) | 50 ng/ml | 15-30 days | 6-12 hours |
| Propxyphene (PPX) | 300 ng/ml | 1-2 days | — |
| Oxycodone (OXY) | 100 ng/ml | 2-4 days | — |