Michigan DUI Defense: Why Science Could Make or Break Your Case

​If you’ve been arrested for drunk driving in Michigan, you might feel like the evidence is stacked against you. Police breath tests, blood draws, and field sobriety tests can sound scientific and convincing — but here’s the truth: DUI defense is all about the science, and the science is often flawed.

The Problem with DUI Testing

Breath and blood testing may look reliable, but many of the machines and methods used are outdated or prone to error.

For example:

• Breath tests can pick up substances in the environment or even medical conditions that mimic alcohol.
• Blood tests may be mishandled, contaminated, or not double-checked with proper scientific safeguards.
• Field sobriety tests are based on “behavioral science” that can be subjective and unreliable.

In Michigan, many jurisdictions don’t follow the gold standard of testing — things like running samples in duplicate or triplicate, or preserving a portion of the sample for independent analysis. That means errors go unchallenged, and people end up convicted based on questionable science.

Why Your Lawyer Needs to Understand Science

Most judges and even many lawyers aren’t trained in chemistry, physiology, or toxicology. That’s why having a DUI attorney who knows how to challenge the science is critical. The court relies on your defense attorney to point out problems with testing procedures — and if your lawyer doesn’t, you risk being judged on unreliable evidence.

A strong DUI defense in Michigan isn’t about accepting the state’s version of the facts. It’s about challenging every test, every assumption, and every shortcut the prosecution tries to use.
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Protecting Your Rights

If you’re facing a DUI charge, don’t just accept the test results at face value. Machines make mistakes. Procedures are skipped. Science can be misapplied. A knowledgeable Michigan DUI lawyer will:
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• Investigate whether your test followed accepted scientific procedures.
• Challenge unreliable or outdated testing methods.
• Hold the state accountable for proving its case with valid, accurate evidence.