Last updated: June 1st, 2016
Delta-9 tetrahydrocannabinol (THC), a cannabinoid found in cannabis, is credited for creating euphoric and psychoactive effects. Your urine is used to test for the amount of just one of the metabolites of THC. A metabolite is basically a chemical produced by the body from another chemical taken in by the body. The metabolite they are looking for is THC COOH.
While THC COOH has no psychoactive effects, it can be detected in your urine for weeks, even months. It is not a marker for current impairment, so it is arguably useless, but nevertheless, THC COOH has become the standard of evidence for determining if you test positive for marijuana use.
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