How To Avoid A False Positive Breathalyzer Test

Step 1: Don't Use Mouthwash

Many leading brands contain some alcohol and can create a "mouth alcohol" effect. Alcohol can remain in the oral cavity for up to 20 minutes.

Step 2: No Smoking

Some research has shown that a chemical in smoke can give a false positive reading in some breathalyzers.

Step 3: Eat Something

Low blood sugar can sometimes produce a chemical indicating you are intoxicated even though you may not be.

Step 4: Don't Burp

If you have acid reflux, or just burped, it may be better to take a blood test. That's because the alcohol contents of your stomach gas will be much more concentrated then the air from your lungs. A burp could give you a false positive for up to 20 minutes.

Step 5: Remember…

The best way to avoid a false positive breathalyzer is not to drink and drive.