The THC One Step Marijuana Test Device (Urine) is a rapid chromatographic immunoassay for the detection of 11-nor-Δ9-THC-9 COOH (THC metabolite) in human urine at a cut-off concentration of 50 ng/mL. The THC One Step Marijuana Test Device (Urine) yields a positive result when the concentration of Marijuana in urine exceeds 50 ng/mL. The test utilizes a monoclonal antibody to selectively detect elevated levels of marijuana in urine.

This assay provides only a preliminary analytical test result. A more specific alternate chemical method must be used in order to obtain a confirmed analytical result. Gas chromatography/mass spectrometry (GC/MS) is the preferred confirmatory method. Clinical consideration and professional judgment should be applied to any drug of abuse test result, particularly when preliminary positive results are indicated.