AlcoScreen 02-- is the simplest, most cost effective method of monitoring for alcohol consumption in your ZERO TOLERANCE testing program. USDOT APPROVED-- AlcoScreen2 is so effective that it has been tested and approved by the US Department of Transportation (USDOT) for required testing of all transportation and safety sensitive employees for blood alcohol concentrations above the federally mandated zero tolerance level of 0.02%. AlcoScreen .02-- is a simple one-step saliva-screening test that works in a clean, non-invasive manner and provides results in 4 minutes. Simply wet the test pad with saliva and wait 4 minutes. The development of a line on the test pad at 4 minutes indicates a blood alcohol concentration exceeding 0.02%.   Positive Result: Blood alcohol above 0.02%. Negative Result: Blood alcohol less than 0.02%.