Drug Detection Time in Urine

Drug/Identifier	Cut-off Level†	Minimum	Maximum
Marijuana (THC)	50 ng/ml	1-4 hours	7 days
Cocaine (COC)	300 ng/ml	1-4 hours	2-4 days
Methamphetamine (MET)	1000 ng/ml	2-7 hours	2-4 days
Amphetamines (AMP)	1000 ng/ml	2-7 hours	2-4 days
Ecstasy (MDMA)	500 ng/ml	2-7 hours	2-4 days
Opiates (heroin) (OPI)	2000 ng/ml	2 hours	2-3 days
Phencyclidine (PCP)	25 ng/ml	4-6 hours	7-14 days
Benzodiazepines (BZO)*	300 ng/ml	2-7 hours	1-4 days
Methadone (MTD)	300 ng/ml	3-8 hours	1-3 days
Barbiturates (BAR)	300 ng/ml	2-4 hours	1-3 weeks
Tricyclic Antidepressants (TCA)	1000 ng/ml	8-12 hours	2-7 days
Oxycodone (OXY)	100 ng/ml	1-3 hours	1-2 days

*Benzodiazepines are detected dependent on whether they are long-acting (up to 10 days), intermediate-acting (up to 5 days) or short-acting (up to 2 days). In addition, other factors such as dose taken, route of administration, time of last dose and individual differences in pharmacokinetics will impact detection of the benzodiazepine.

† First Check® Home Drug Tests use specific “cut-off” levels. Screening tests may not detect amounts of drugs in a sample that are below the cut-off level. Even though some level of drug may be present in a sample, the sample would still be considered a Negative Result if the drug level is below the cut-off level.

Before taking the test, users must read all of the content in the package insert. For a list of reactive and non-reactive drugs, see the drug testing guides, which can be found on the Instructions tab within the product pages.

Drug Detection Time in Urine

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