Test Cups are rapid, screening tests that detect multiple drugs and drug metabolites qualitatively in human urine at specified cut-off levels. Each control region is marked with a rose-pink band. A preliminary positive result is indicated for the corresponding drug of that specific test zone if no color band appears in the appropriate test "T" region.To learn more please visit:https://www.cibiotest.com/product/multi-drug-test-cup/ Phone: +862082109823