More than 99% accurate in detecting specific drugs according to the designated cut-off levels detecting Cocaine and very easy to use :just dip the test into urine and read results, 2 lines appears if clean, 1 control line only appears if not clean; Read results in minutes; 510(k) cleared and CLIA Waived for OTC use;Ideal for: Home drug testing/Work place testing /School/college/university drug testing/Criminal justice/Law enforcement drug testing/Substance abuse rehabilitation centers; Same science used as Lab screen test; More tests with lower cost than retailers offer;