- Alcohol Twelve to twenty-four hours
- Amphetamine Two to three days
- Cannabis Two to seven days, or up to one month for regular users
- Cocaine Twelve hours to three days
- Crystal Meth Two to three days
- Diazepam One to two days
- Ecstasy Two to four days
- GHB up to twenty-four hours
- Heroin One to two days
- Ketamine 5 Five to seven days
- LSD Two to three days
- Magic Mushrooms (Psilocybin) up to eight hours
- Methadone Two days
- Steroids Fourteen days (if taken orally) up to one month (if injected)
- Temazepam One to two days (longer after injecting)
For more information, check out the FRANK website.