The worst part about any article examining ignition interlock violations is that by the time you start looking for information about them, it’s almost always because you’ve already had a problem. In other words, the idea of telling someone how to avoid a problem, or what to do right after a failed or missed breath test is kind of a moot point since the usual reason they’re searching online is that they’ve already received notice of an interlock violation. By that time, it’s way too late for any kind of breath or urine test.
Although a bit off-topic for this piece, it’s worth pointing out that there are things that can be done, at least sometimes, to prove you weren’t drinking, even up to 90 days after providing a positive breath sample. There is always some analysis required to determine whether any such test is worth trying, but the larger point is that if you’re violated for or have false positive test results, and even if it’s up to 12 weeks later, you’re not necessarily dead in the water in terms of being able to get some exculpatory evidence.
As complex as all of this can be, there is a fairly simple, but ugly reality to it: most violations are caused by NOT following the Michigan Secretary of State’s instructions regarding ignition interlock use, and/or what to do if you fail or miss a test. The state is rather clear about how not to fail or miss a test, and if that does happen, it directs the person to promptly go to a police station and get a PBT (breath) test, or, if that’s not possible, get an EtG urine test within 24 hours, and preferably by the end of the day the problem occurred.