Drug Detection Times

October 22, 2024

Substance	Urine	Hair	Blood
Alcohol	6 to 24 hrs (5 days with EtG)	N/A	12 hrs
THC/Marijuana (single use)	1 to 3 days	Up to 90 days	24 hrs
THC/Marijuana (habitual use)	Up to 14 days	Up to 90 days	2 days
Amphetamines (except meth)	2 to 4 days	Up to 90 days	12 hrs
Methamphetamine	2 to 5 days	Up to 90 days	24 hrs
Barbiturates (except phenobarbital)	2 to 10 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 6 weeks	Up to 90 days	N/A
Cannabis (single use)	1 to 3 days	Up to 90 days	24 hrs
Cannabis (habitual use)	Up to 14 days	Up to 90 days	2 days
Cocaine	2 to 7 days	Up to 90 days	24 hrs
Morphine	2 to 4 days	Up to 90 days	6 hrs
Heroin	2 to 4 days	Up to 90 days	6 hrs
LSD	2 to 24 hours	Unknown	0 to 3 hours
PCP	7 to 14 days	Up to 90 days	1 to 3 days
Codeine	2 to 4 days	Up to 90 days	12 hrs