Marijuana (THC): No trade name
THC (tetrahydrocannabinol) is a hallucinogenic, sedative drug considered the primary active compound of the 400+ chemicals in the cannabis sativa plant. While there is some legal use of THC, such as the prescription Marinol (Dronabinol) used for wasting in cancer/HIV patients, most THC drug test positives are the result of illicit use. Marijuana is the number 1 illegal drug in the US.
Drug Class
Hallucinogen
Trade Name
No trade name
Street Names
Pot, ganga, weed, grass, mary jane, reefer, smoke, herb, and many others.
Effects Of Use
Short-term effects include memory and learning problems, distorted perception, and difficulty thinking and solving problems.
Approximate Detection Time
Urine: 1-3 days (infrequent), up to 10 days (moderate), up to 30 days (chronic)

Oral Fluid: less than 24 hours
Urine Cutoff Levels
Immunoassay (screening): 50* ng/mL

GC/MS (confirmation): 15* ng/mL
Primary Antigen
THC breaks down extensively in the body; most common metabolite is THC-COOH. This metabolite is also referred to as carboxy-THC or THCA. 11-nor-_9 THC-9 COOH
Common Cross-Reactants
Sustiva (efavirenz), an HIV treatment drug, is known to produce metabolites that cross-react on many THC assays. Also, the Micro-Distributing test is considered very sensitive to low levels in urine.


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