The protections afforded by the Fourth Amendment of the United States Constitution prohibit the police from subjecting a person to an unreasonable search or seizure. In DUI cases, the right to be free from unreasonable searches and seizures has been interpreted to prevent the police from subjecting a person to a blood test without a warrant, unless the person consents to the test. Typically, this means that the results of any blood test taken without a warrant or valid consent would be suppressed.
There are exceptions to the rule, however, as shown in a recent case in which the Arizona Supreme Court upheld a DUI conviction of a woman regardless of the fact that her blood test was not voluntary, on the basis that the police believed they were acting in good faith. Even though the decision is not precedential outside of Arizona, cases that interpret a person’s rights with regards to chemical testing continue to affect the landscape of DUI law throughout the country. If you are charged with DUI in Illinois, it is prudent to meet with an experienced Illinois DUI defense attorney to discuss what evidence the State may be able to use against you.
The Defendant’s Blood Test
The defendant was arrested on suspicion of DUI. The arresting officer read the defendant a form that stated that under Arizona law, she was required to submit to a blood test. The defendant then submitted to testing. She was subsequently charged with aggravated DUI. Prior to trial, she moved to have the results of the blood test suppressed on the grounds that her consent was coerced. Her motion was denied and she was convicted of aggravated DUI, after which she appealed.