Detection Time
Alcohol
24 hours or less
Amphetamines
1 to 5 days
Barbiturates
Short-acting: 1 to 5 days
Long-acting (Barbital, Phenobarbital): 1 to 3 weeks
Benzodiazepines
Short-term Therapeutic Use: 1 to 5 days
Long-term / Chronic Use: 1 to 3 weeks
Cocaine
LSD
Marijuana (THC)
Casual Use: 1 to 10 days
Long-Term / Chronic Use: 1 to 4 weeks
MDMA (Ecstasy)
1 to 7 days
Methadone
Methamphetamine
Opiates
1 to 8 days
PCP (Phencyclidine)