---
title: "What special rules apply to hospital blood draws in Illinois DUI cases?"
description: "Illinois hospital blood draws performed for medical treatment are governed by 625 ILCS 5/11-501.4 and 5/11-501.4-1. Results become admissible in DUI prosecutions when drawn in the regular course of..."
url: https://chicagoduilawyer.net/faq-items/what-special-rules-apply-to-hospital-blood-draws-in-illinois-dui-cases/
date: 2026-07-08
modified: 2026-07-08
author: "Chicago DUI Lawyer"
type: faq
lang: en
---

# What special rules apply to hospital blood draws in Illinois DUI cases?

Illinois hospital blood draws performed for medical treatment are governed by 625 ILCS 5/11-501.4 and 5/11-501.4-1. Results become admissible in DUI prosecutions when drawn in the regular course of treatment, but foundational rules apply. The hospital must produce records showing the draw was medical, the identity of the drawer, the time, and the analytical method. Serum-versus-whole-blood conversion becomes critical since hospital labs typically test serum, which reads higher than whole blood by roughly 12 to 20 percent. Failure to convert overstates BAC. Law enforcement access to hospital records requires a subpoena, court order, or statutory authority. A Chicago DUI lawyer targets the conversion math and the record-request process.