Drug Testing Information

Drugs of Abuse Reference Guide

Drug group EIA screen cutoff level*
(ng/mL**)		 GC/MS confirmation
(ng/mL**)		 Detection Times in Urine
Amphetamines
(amphetamine and 
methamphetamine)		 1,000 500 1-2 days
Cocaine metabolite 300 150 2-4 days
Marijuana metabolites 50 15 Single use 1-7 days Prolonged use 1-2 months
Opiates (codeine and
morphine)		 2,000 2,000  2 days 
Phencyclidine 25 25 14- 30 days chronic users
Barbiturates 300 200

Short acting 1-2 days

Long acting 1-3 weeks
Benzodiazepines 300 200

Theraputic dose 3 days

Chronic 4- 6 weeks
Methadone 300 200 3 days
Propoxyphene 300 200 6 hours - 2 days
Ethyl Alcohol .02 .02 1-12 hours
MDMA  500 250 1-2 days
* These are standard cutoff levels; alternate cutoff levels may be available.
** Nanograms per milliliter; the above cutoff levels, list of analytes and test methodologies are subject to change when required by applicable government regulations or guidelines.
Order Test
Verified Customer Reviews
>