Many hand sanitizers have alcohol as a primary ingredient. Some are as much as 60% alcohol. The alcohol from the sanitizer will rapidly evaporate after application. To avoid the possibility that alcohol from the use of this product could affect a subject test result, it is best to abstain from testing until after the alcohol has evaporated. We would suggest that waiting 5 to 10 minutes after the sanitizer has dried on the Operator`s hand will eliminate the possibility that residual alcohol from the sanitizer could affect a test result.