SmartReader
Drug Ingestion/Detection times (Urine)
There are two time periods that are significant when it comes to the detection of drugs; how long after a drug is taken is it first detectable (ingestion) and how long the drug is detectable in urine (detection).
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 - 7 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
Ecstasy
2 - 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
*Times can vary significantly from these estimates based on how long the person has been taking the drug, the amount of drug they use, or the person's metabolism.