Preliminary Alcohol Screening Test (PAS)

Diabetes or Fasting: Los Angeles DUI False Positives on a Breathalyzer

June 19, 2025

By Alex Andryuschenko – Los Angeles DUI Defense Attorney When most people think of a DUI, they assume alcohol consumption is the only cause of a failed breath test. But what if a person hasn’t had a drop to drink—and still blows a positive result? For individuals with diabetes, those who are fasting, or people on low-carb ketogenic diets, this is not only possible—it’s scientifically documented. As a Los Angeles DUI Defense Attorney, I regularly come across cases where innocent drivers are arrested based on flawed breath test results. One of the most overlooked causes of false positive BAC readings is acetone, a compound naturally produced by the body. What Is Acetone, and Why Is It in Your Breath? Acetone […]

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