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Newsgroups: alt.drugs
Date: Sat, 24 Dec 1994 21:56:17 UTC
Subject: drug detection times

Due to the interest in drug screening in this newsgroup,
I'd like to share the following information provided by a local
(USA) drug screening laboratory:

Drug			Approximate Detection Time In Urine (*)
Amphetamines		24 - 48 hours
Barbituates		Short-Acting (i.g. secobarbital) 1 day
			Long-Acting (i.g. phenobarbital) 2-3 weeks
Benzodiazepines		3 Days
Cannabinoids		Acute dosage of 1-2 'joints'   2-3 days
			Chronic use >5 joints/day	14-18 days
			Oral Ingestion (20 mg)		1-5 days
Cocaine			2-4 days
Methadone		3 days
Methaqualone		14 days
Opiates			2 days
Phencyclidine		8 days (overdose)
Propoxyphene		6 hours to 2 days
(*) Note: Detection times vary depending on analytical method used,
 drug metabolism, patient's condition, fluid intake and method and
frequency of ingestion.  These are general guidelines only.