Can You Fail A Breathalyzer 12 Hours After Drinking
However, in general, a breathalyzer can detect alcohol in a person's system around 15 minutes after it has been drunk and up to 24 hours afterwards. Caffiene, food, etc, will not help speed the process. If you were three times the legal driving limit when you ubered home from the bar, know that it’s going to take you at least.