Drug detection periods, detection times: urine, hair, blood test
The following chart gives approximate drug detection periods for each substance by test type. The detection period ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH. For ease of use, the detection times of metabolites have been incorporated into each parent drug. For example, heroin and cocaine can only be detected for a few hours after use, but their metabolites can be detected for several days in urine. In this type of situation, we will report the (longer) detection times of the metabolites.
NOTE 1: Oral fluid or saliva testing results for the most part mimic that of blood. The only exception is THC. Oral fluid will likely detect THC from ingestion up to a maximum period of 18-24 hours.
NOTE 2: Urine can not detect current drug use. It takes approximately 6-8 hrs. post-consumption for drug to be metabolized and excreted in urine. Similarly, hair requires two weeks, and sweat, seven days.
| SUBSTANCE | URINE | HAIR | BLOOD |
|---|---|---|---|
| Alcohol | N/A | 12 hours | |
| Amphetamines (except meth) | 2 to 3 days | up to 90 days | 12 hours |
| Methamphetamine | 2 to 5 days | up to 90 days | 24 hours |
| Barbiturates (except phenobarbital) | 2 to 3 days | up to 90 days | 1 to 2 days |
| Phenobarbital | 7 to 14 days | up to 90 days | 4 to 7 days |
| Benzodiazepines | 1 to 5 days | up to 90 days | 6 to 48 hours |
| Cannabis (single use) | 2 to 3 days | up to 90 days | 24 hours |
| Cannabis (habitual use) | up to 30 days | up to 90 days | 2 days |
| Cocaine | 1 to 3 days | up to 90 days | 24 hours |
| Codeine | 2 to 3 days | up to 90 days | 12 hours |
| Cotinine (a break-down product of nicotine) | 2 to 4 days | up to 90 days | 2 to 4 days |
| Morphine | 2 to 3 days | up to 90 days | 6 hours |
| Heroin | 2 to 3 days | up to 90 days | 6 hours |
| LSD | 2 to 24 hours | unknown | 0 to 3 hours |
| PCP | 5 to 7 days | up to 90 days | 24 hours |
THC Marijuana Cannabis Dip Strip Drug urinalysis
Cocaine Dipstrip Drug urinalysis
Single Panel Home urinalysis Kit
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