How long do drugs stay in your body or drug's detection period

Here we offer to your attention how long does marijuana stay in your system approximate detection periods for each substance by test type. The ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH.

Approximate values for detection periods
Substance	Urine	Hair	Blood
Alcohol	3–5 days via ethyl gluconoride (EtG) metabolite or 6-24 hours via traditional method	Up to 90 days	12 hours
Amphetamines (except meth)	1 to 3 days	up to 90 days	12 hours
Methamphetamine	3 to 5 days	up to 90 days	1-3 days
MDMA (Ecstasy)	4 days	up to 90 days	25 hours
Barbiturates (except phenobarbital)	2 to 3 days	up to 90 days	1 to 2 days
Phenobarbital	2 to 3 weeks	up to 90 days	4 to 7 days
Benzodiazepines	Therapeutic use: 3 days. Chronic use (over one year): 4 to 6 weeks	up to 90 days	6 to 48 hours
Cannabis	Single use: 1-6 days Weekly use: 3-9 days Daily use: 7-30 days	Up to 90 days	2-3 days after infrequent use, up to 2 weeks after frequent use
Cocaine	2 to 4 days with exceptions for certain kidney disorders	up to 90 days	24 hours
Codeine	1 day	up to 90 days	12 hours
Cotinine (a break-down product of nicotine)	2 to 4 days	up to 90 days	2 to 4 days
Morphine	2 days	up to 90 days	6 hours
Heroin	3 to 4 days	up to 90 days	6 hours
LSD	24 to 72 hours (however tests for LSD are very uncommon)	up to 3 days]	0 to 3 hours
Methadone	3 days	up to 90 days	24 hours
PCP	3 to 7 days for single use; up to 30 days in chronic users	up to 90 days	1 to 3 days

NOTE 1: Oral fluid or saliva testing results for the most part mimic that of blood. The only exceptions are THC and benzodiazepines. Oral fluid will likely detect THC from ingestion up to a maximum period of 18-24 hours. Low saliva:plasma ratio continues to cause difficulty in oral fluid detection of benzodiazepines [3]
NOTE 2: Urine cannot detect current drug use. It takes approximately 6-8 hours or more post-consumption for drug to be metabolized and excreted in urine. Similarly, hair requires two weeks, and sweat, seven days.

Page last modified Sat Oct 09 11:37:27 2010.