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Oklahoma DUI Mouth Alcohol

Breathalyzer tests work by measuring alcohol content found in air from an individual's lungs. However, when alcohol is trapped in the mouth, it can falsely inflate the blood alcohol content (BAC) reading, resulting in an arrest for drunk driving.

How Mouth Alcohol Renders Inaccurate BAC Results

The breath test is not a true measure of BAC; rather, it measures breath alcohol content in a sample and then calculates BAC by using a 1:2100 breath-to-blood ratio. The Intoxilyzer 8000, the breath test machine used in Oklahoma, is supposed to evaluate air from the deep lungs. However, it can be tricked by residual alcohol in the mouth, also known as mouth alcohol.

A number of things can cause mouth alcohol. For example, menthol cough drops can be read as alcohol compounds by the breath test. Dental work, including dentures or bridges, can trap alcohol in the mouth. Acid reflux can also cause alcohol gases to pass into the mouth, where they register on the breathalyzer. Tobacco, gum and even white bread - yes white bred has been shown to give false reading on these machines.

To combat these problems, officers are trained to watch the individual for a 15-minute period before administering the breath test to ensure he or she doesn't perform any activity that could produce a false reading. Failure to do so could result in the dismissal of the breath test.

Don't Accept the Breath Test Reading at Face Value

Each member of the legal team at the Edge Law Firm has been trained on the breath test, and can investigate your case to determine if any of the machine's weaknesses could have influenced your results. In fact, Attorney Bruce Edge even owns an Intoxilyzer 8000, and can use it to prepare your defense.

If you were arrested for drunk driving after failing the breath test, there may be several defenses available. For advice on your case, complete our online form or call (877) DUI-EDGE or (918) 582-6333 to schedule a free evaluation.

Oklahoma DUI Laws