False positives occur on DWI breathalyzer tests more often than you might think. Breathalyzer testing equipment always comes with its margin of error, and the test is administered by a person who is not infallible. A lesser-known potential cause of a false positive on a DWI test is the diet of the person being tested. For example, a keto diet, low carb diet, or intermittent fasting may cause false positives on DWI breathalyzer tests.
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