How to Self-Test for Breath Alcohol
To estimate of your blood alcohol concentration (BAC) a breath alcohol test is given. The breath alcohol test measures the amount of alcohol in the air that you breathe out or exhale. There is a simple hand held device that allows you to measure your own breath alcohol level. If the device is calibrated correctly and used according to the manufacturer’s directions, it will give you an accurate estimate of your blood alcohol level. This personal device is similar to, although not as precise as, the type of test given by police for suspected drunk drivers.

