
There are many things you should know before facing a drug test, detection time being one of them. Drug tests will use blood, saliva, sweat, hair, or urine to determine if certain drugs have been used prior to testing.
The list below shows the average time that each drug type remains detectable, per sample type. Note that the detection times for sweat are unknown for all drug types. You also might want to read about common myths surrounding drug tests.
Alcohol
Urine |
6-24 hours |
Hair |
2 days |
Saliva |
12-24 hours |
Blood |
12-24 hours |
Note: a urin alcohol test may test for ethyl glucuronide, which stays present for 80 hours.
Amphetamines
Urine |
1-3 days |
Hair |
90 days |
Saliva |
12 hours |
Blood |
12 hours |
Note: excluded are “Meth” and MDMA.
Meth
Urine |
3-5 days |
Hair |
90 days |
Saliva |
1-3 days |
Blood |
1-3 days |
Mdma
Urine |
3-4 days |
Hair |
90 days |
Saliva |
3-4 days |
Blood |
3-4 days |
Barbiturates
Urine |
1 day |
Hair |
90 days |
Saliva |
1-2 days |
Blood |
1-2 days |
Note: except Phenobarbital.
Phenobarbital
Urine |
2-3 weeks |
Hair |
90 days |
Saliva |
4-7 days |
Blood |
4-7 days |
Benzodiazepines
Urine |
Casual/therapeutic use: 7 days Chronic use (over 1 year): 4-6 weeks |
Hair |
n/a |
Saliva |
n/a |
Blood |
n/a |
Cannabinoids
Urine |
Casual users: 30 days Heavy users and those with high body fat: 81 days |
Hair |
Up to 90 days |
Saliva |
2–24 hours |
Blood |
Single use: 2-3 jours Frequent use: 2 weeks
|
Cocaine
Urine |
Casual users: 2-5 days Heavy users: 7-10 days |
Hair |
90 days |
Saliva |
2-10 day |
Blood |
2-10 day |
Note: those with kidney problems may still test positive outside of these timeframes.
Codeine
Urine |
2-3 days |
Hair |
90 days |
Saliva |
2-3 days |
Blood |
2-3 days |
Tca’S
Urine |
7-10 days |
Hair |
Undetectable |
Saliva |
Unkown |
Blood |
Unkown |
Lsd
Urine |
2-24 hours |
Hair |
4 days |
Saliva |
2-4 days |
Blood |
2-4 days |
Methadone
Urine |
7-10 days |
Hair |
90 days |
Saliva |
24 hours |
Blood |
24 hours |
Steroids
Urine |
3-30 days |
Hair |
Unknown |
Saliva |
Unknown |
Blood |
Unknown |
Pcp
Urine |
Single use: 3-7 days Regular use: 30 days |
Hair |
90 days |
Saliva |
1-3 days |
Blood |
1-3 days |