DUI Impact of Fever on Breath Test

Question: Can running a fever impair the results of a DUI breath or blood test in Alabama?

Answer: Yes, running a fever could negatively impact a breath or blood test in a DUI investigation. Forensic blood and breath alcohol testing is premised upon certain assumptions; mainly in breath testing that your body temperature is 34 degrees centigrade. This is due to the assumptions needed in the blood breath exchange, or what we call Henry’s Law. Without correction, an elevated temperature could increase a forensic blood alcohol test.