Can Medical Conditions Affect DUI Test Results?

Jul 30, 2026

Can Medical Conditions Affect DUI Test Results? Attorney Joshua Boardman from Combs Waterkotte discusses everything you need to know about Illinois DUI criminal charges, including first-time DUI, second DUI, Illinois DUI laws, DUI defense strategies, CDL DUI charges, and more.

Combs Waterkotte is a leading DUI defense law firm serving Illinois and Missouri. Our Illinois defense attorneys will fight for your freedom and rights. If you are facing DUI charges in Chicago or anywhere else in Illinois, we can help. Call us at (312) 500-HELP 24 hours a day, 7 days a week.

Interview Transcript

Scott Michael Dunn: Can medical conditions affect Illinois DUI test results?

Joshua Boardman: They certainly can, and that’s something that’s often relevant in our cases. Especially where there’s not a blood draw or there’s not a consent to breathalyzer tests. There are different medical conditions, and I mean there’s far too many to name, but there are medical conditions that the symptoms could by and large be confused with impairment. If you have a medical condition where you may randomly have seizures or one that can create erratic behaviors or appearances of impairment or things like that, that could be confused by a law enforcement officer. Where there’s a potential affirmative defense of a medical condition, we evaluate what the symptoms are and how well those symptoms match the allegations of impairment.

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