As anything in life, 'it depends on the person', factors such as age, weight, and quantity will effect these out comes.
| Drug | How soon after taking drug will there be a positive drug test? | How long after taking drug will there continue to be a positive drug test? |
|---|---|---|
| Marijuana/Pot | 1-3 hours | 1-30 days |
| Crack (Cocaine) | 2-6 hours | 2-3 days |
| Heroin (Opiates) | 2-6 hours | 1-3 days |
| Speed/Uppers (Amphetamine, methamphetamine) |
4-6 hours | 2-3 days |
| Angel Dust/PCP | 4-6 hours | 7-14 days |
| Ecstacy | 2 to 7 hours | 2 - 4 days |
| Benzodiazepine | 2 -7 hours | 1 - 4 days |
| Barbiturates | 2 - 4 hours | 1 - 3 weeks |
| Methadone | 3 - 8 hours | 1 - 3 days |
| Tricyclic Antidepressants | 8 - 12 hours | 2 - 7 days |
| Oxycodone | 1 - 3 hours | 1 - 2 days |