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Approximate Drug Detection Times

Drug	Abbreviation	Cut Off Level for Urine	Approx. Detection Time in Urine	Cut Off Level for Saliva	Approx. Detection Time in Saliva
Amphetamine	AMP	1000 ng/ml	2-4 Days	50 ng/ml	10 min-72 hours
Amphetamine	AMP500	500 ng/ml	2-4 Days
Barbiturates	BAR	200 ng/ml	4-7 Days
Benzodiazepines	BZD	300 ng/ml	3-7 Days	50 ng/ml	10 min-48 hours
Benzodiazepines	BZD200	200 ng/ml	3-7 Days
Buprenorphine/Norbuprenorphine	BUP	10 ng/ml	3-6 Days
Cocaine	COC	300 ng/ml	2-4 Days	20 ng/ml	10 min-24 hours
Cocaine	COC150	150 ng/ml	2-4 Days
Ecstasy (MDMA)	XTC	500 ng/ml	1-3 Days
Marijuana	THC	50 ng/ml	15-30 Days	12 ng/ml	Up to 14 hours
Methadone	MTD	300 ng/ml	3-5 Days	30 ng/ml
Methamphetamine	MET	1000 ng/ml	3-5 Days	50 ng/ml	1-3 Days
Methamphetamine	MET500	500 ng/ml	3-5 Days
Opiates/Morphine	OPI or MOR	2000 ng/ml	2-4 Days	40 ng/ml	1 hour - several days
Opiates/Morphine	OPI300 or MOR300	300 ng/ml	2-4 Days
Oxycodone	OXY	100 ng/ml	2-4 Days
Phencyclidine	PCP	25 ng/ml	7-14 Days	10 ng/ml	1-3 Days
Propoxyphene	PPX	300 ng/ml	1-2 Days
Tricyclic Antidepressants	TCA	1000 ng/ml	7-10 Days

Note: The above chart gives approximate detection periods for each drug substance. Ranges can be affected by factors such as amount and frequency of drug use, drug tolerance, metabolic rate, body mass, age, overall health, pH, etc.

Amount and Frequency of Use: Small, single, isolated doses are generally detected at the lower end of the range with chronic and long-term use typically being detected at the higher end.

Drug Tolerance: Individuals that establish a tolerance for the drug usually metabolize it faster.

Metabolic Rate: Individuals with a slower metabolism are prone to longer drug detection periods.

Body Mass: In general, human metabolism slows with increased body mass, resulting in longer drug detection periods. Also as THC and PCP are known to accumulate in fatty lipid tissue, individuals with a high percentage of body fat in relation to total body mass are subject to longer drug detection periods for those drugs.

Age: As one's metabolism usually slows with age a longer drug detection period could be a result. Overall Health: Typically one's metabolism slows during periods of deteriorating health thus resulting in longer drug detection periods.

Urine pH: Urine pH can impact drug detection periods. Typically, highly acidic urine results in shorter drug detection periods.

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