Delta-9-tetrahydrocannabinol is the active agent of the popularly abused street drug, marijuana.
Detection and confirmation of drug abuse involving delta-9-tetrahydrocannabinol (marijuana)
The presence of tetrahydrocannabinol carboxylic acid (THC-COOH), a major metabolite of delta-9-tetrahydrocannabinol, in urine at concentrations >15.0 ng/mL is a strong indicator that the patient has used marijuana.
