The purpose of a breathalyzer test is to measure the alcohol content of the air deep within a suspected drunk driver’s lungs. The alcohol content in this air directly correlates with the concentrated amount of alcohol in your bloodstream. Breathalyzer tests can also detect residual alcohol inside your mouth which can lead to a blood alcohol reading much higher than reality. You should be sure to ask your Charleston DUI lawyer about the many ways what you put in your mouth can cause a misreading on a breathalyzer test.

Mouthwash and Breathalyzers

Because a breathalyzer test notices residual alcohol left in your mouth, there are some products such as mouthwash and even cough drops that can cause a false reading on a test. Residual alcohol can get trapped in the crevices of metal dental work such as retainers or braces, mouth piercings, and between your teeth! Sometimes, even burping can lead to residual alcohol being present on your tongue.

Even though the above-mentioned products do have alcohol in them, none of them cause intoxication; but unfortunately, they can lead to a skewed result on your breathalyzer. A Charleston DUI lawyer can fight a breathalyzer test as a false-positive if you are able to prove that you were not drunk when you were pulled over.

The fact that residual alcohol from mouthwash can cause problems on a breathalyzer also means it can do the same on interlock systems. If an ignition interlock system detects alcohol on your breath, you can end up with a revoked license, revoked probation, and risk going to jail. Try to avoid using mouthwash right before you leave the house if you must blow into an interlock device to start your car. You can also try rinsing your mouth with water after using mouthwash to rinse away any leftover alcohol.

Getting a DUI is scary and if you get one because of a false positive due to residual alcohol in your mouth, being arrested can also be infuriating. Let The Law Office of Peter David Brown help you after your DUI by calling 843-242-0281.