THC Test Features: 1) CE, ISO13485, ISO9001 2) Specimen: urine 3 ... 1pc, with desiccant in a foil pouch THE ONE STEP THC TEST IS A RAPID, QUALITATIVE, COMPETITIVE BINDING IMMUNOASSAY FOR ... THE DETERMINATION OF MARIJUANA(THC) AND ITS METABOLITES IN HUMAN URINE.THE TEST IS USED ... more information on OEM capabilities. Manufacturer of One Step THC Test