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The Drug Test Items and Their Approximate Detection Periods in Blood / Oral Fluid​

May 24, 2018

 The Drug Test Items and Their Approximate Detection Periods in Blood / Oral Fluid

Substance

Blood / Oral Fluid

Amphetamines

12 hours

Methamphetamine

1 to 3 days

MDMA (Ecstasy)

3 to 4 days

Barbiturates

1 to 2 days

Phenobarbital

4 to 7 days

Benzodiazepines

6 to 48 hours

Cannabis

2 to 3 days in blood, up to 2 weeks in blood of heavy users. However, it depends on whether actual THC or THC metabolites are being tested for, the latter having a much longer detection time than the former. THC (found in marijuana) may only be detectable in saliva/oral fluid for 2 to 24 hours in most cases.

Cocaine

2 to 10 days

Cotinine

2 to 4 days

Morphine

1 to 3 days

Tricyclic antidepressants(TCA's)

Detectable but dose relationship not established

Methadone

24 hours

PCP

1 to 3 days



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