The length of time any drug stays in your system will vary depending onyour physiological makeup (height, weight, body fat, age, health), or evenstress levels.

How long a drug will stay in your system also depends on frequency of use,the quantities taken, the length of time taken, and the quality or potencyof the drug.

Individuals with slower body metabolism are prone to longer drug detectionperiods -- human metabolism slows with increased body mass, resulting inlonger drug detection periods. THC and PCP are known to accumulate in fattylipid tissue and chronic users, physically inactive users, and individualswith a high percentage of body fat are prone to longer drug detectionperiods for THC and PCP.

Human metabolism also slows with age, resulting in longer drug detectionperiods. Human metabolism slows during periods of deteriorating health,resulting in longer drug detection periods.

Users typically metabolize a drug faster once a tolerance to the drug isestablished. Users also may test positive longer than normal, most notablyin cases of long-term chronic abuse, in individuals with significant bodymass and/or body fat, and in individuals with health related issuesresulting in abnormally slow body metabolism.

Detection time in urine
(estimates only)

Alcohol 24 hours
Amphetamines (Crystal, Ice, Crank) 2 - 4 days
Barbiturates - Short Acting (i.e. secobarbital) 1 - 2 days
Barbiturates - Long Acting (i.e. phenobarbital) 2 - 3 weeks
Benzodiazepines (tranquilizers) (Librium®,Valium®,Serax,Xanax®) 3 days
Cannabinoids/THC (Marijuana, Hashish) 3 - 30 days
Cocaine (Coke, Crack) 2 - 5 days
Lysergic Acid / Diethylamide (LSD) 2 days
Opiates (Heroin, Morphine) 3 - 4 days
Phencyclidine (PCP, Angel Dust) 3 - 8 days
Synthetic Narcotics (Fentanyl) 2 - 5 days
Methamphetamines 2 - 4 days
Clenbuterol 2 - 4 days
Codeine 2 - 5 days
Euphoric's (MDMA, Ecstasy) 2 - 3 days
Methadone 3 - 5 days
Methaqualone (Quaalude) l - 14 days
Phenobarbital 10 - 20 days
Propoxyphene (Darvon) 1 - 3 days
Psilocybin (Magic Mushrooms) 2 - 4 days
Anabolic Steroids 14 days