The Alcohol-Screen Breath Test is a test to determine a person's breath alcohol level. This test provides a qualitative test result, i.e. whether alcohol is present in the breath or not. At an alcohol concentration of more than 0.2‰ or 20 mg/dL, the colour in the test field will change. The Alcohol-Screen Breath Test is a rapid test, providing a reliable result after only 60 seconds.