Description
The Rapid THC test is an immunochromatography based one step in vitro test. It is designed for qualitative determination of THC and its metabolites in human urine specimens. The presence of 11-nor-?9-THC-9-COOH in human urine above a cut-off level of 50 ng/ml can be detected. This assay may be used in the point of care setting. The Rapid THC test is based on the principle of specific immunochemical reaction between antibodies and antigens to analyze particular compounds in human urine specimen. The assay relies on the competition for binding antibody between drug conjugate and free drug which may be present in the urine specimen being tested. When drug is present in the urine specimen, it competes with drug conjugate for the limited amount of antibody-dye conjugate. When the amount of drug is equal or more than the cut-off, 50 ng/ml, it will prevent the binding of drug conjugate to the antibody. Therefore, a positive urine specimen will not show a colored band on the test line zone, indicating a positive result, while the presence of a colored band indicates a negative result.