The Marijuana (THC) urine drug test is a rapid, lateral flow diagnostic designed to detect 11-nor-▲-9 THC-9-carboxylic acid (THC) in human urine at a cut-off level of 50 ng/ml. Tetrahydrocannabinols (THC, ▲-9-THC, ▲-1-THC) are the most active of the principle constituents, as well as the major metabolites, of cannibinoids such as marijuana and hashish. Cannibinoids are used as central nervous system depressants and can be detectable in urine for 2-5 days (casual use) and 14-30 days (chronic use). The Marijuana (THC) urine drug test detects THC in order to evaluate the abuse of cannibinoids.