Approximate Detection Times Table —

Last Updated January 2011

	LOQ (ng/mL)	Detection Time* up to
Amphetamine-Type Stimulants
Amphetamine	50	3 days
Methamphetamine	50	3 days
3,4-Methylenedioxyamphetamine (MDA)	50	2 days
3,4-Methylenedioxymethamphetamine (MDMA)	50	2 days
Phentermine	50
Ephedrine/pseudoephedrine	Not quantitated	5 days
Barbiturates
Long-Acting
Phenobarbital	100	15 days
Intermediate-Acting
Butalbital	100	7 days
Amobarbital	100	3 days
Short-Acting
Pentobarbital	100	3 days
Secobarbital	100	3 days
Benzodiazepines
Long-Acting		10 days
Diazepam	100
Nordiazepam	100
Intermediate-Acting		5 days
Alprazolam	100
Lorazepam	100
Oxazepam	100
Temazepam	100
Chlordiazepoxide	100
Clonazepam	100
Flunitrazepam	50
Short-Acting		2 days
Triazolam	100
Flurazepam	100
Buprenorphine
Buprenorphine	0.5	7 days
Norbuprenorphine	0.5	7 days
Cocaine & Metabolite
Cocaine	50	<1 day
Benzoylecgonine	50	5 days
Fentanyl
Fentanyl	0.2	3 days
Norfentanyl	1.0	3 days
Ketamine
Ketamine	25	2 days
Norketamine	25	2 days
Lysergic Acid Diethylamide (LSD)
LSD	0.5	<1 day
2-Oxo-3-hydroxy-LSD	5	5 days
Marijuana/Cannabis (THC-COOH)
Single Use	3	3 days
Moderate Use (4 times per week)		5 days
Heavy Use (daily)		10 days
Chronic Heavy Use		30 days
Methadone
Methadone	100	7 days
EDDP (methadone metabolite)	100	7 days
Methaqualone
Methaqualone	100	6 days
Opiates
6-MAM	100	1 day
Morphine	100	3 days
Codeine	100	3 days
Hydrocodone	100	3 days
Hydromorphone	100	3 days
Oxycodone	100	3 days
Oxymorphone	100	3 days
Phencyclidine
Phencyclidine	25	8 days
Propoxyphene
Propoxyphene	100	3 days
Norpropoxyphene	100	10 days

*These are approximate detection times for the drug or metabolites in urine. The actual detection time depends on dose, frequency of use, and individual metabolism.

Note: These tests do not differentiate between dextro (+) amphetamine (dexamphetamine) and racemic mixtures of dextro (+) and levo (-) isomers that are present in “street” amphetamine. These tests do not differentiate between ephedrine and pseudoephedrine.