False positives happen. Common causes: mouthwash, breath spray, NyQuil, asthma inhalers, fermented food, sourdough bread, GERD/acid reflux, ketosis from diabetes. Document the cause within the time window. Device malfunction can also produce false readings. We can challenge violations based on documented false positive sources.
What if my Rhode Island ignition interlock gives a false positive?The RI DUI Guy - Chad F Bank2026-05-23T02:27:07-04:00