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Arizona High Court: Police Can't Take DUI Blood Sample Without Consent Or Warrant

Whether it’s alcohol, methamphetamine or marijuana, officers are not allowed to run a driver’s blood sample unless they have legal permission.  

Unless the driver agrees to a blood test — or an officer has a warrant — the Arizona Supreme Court says police cannot run a DUI blood sample, even if they suspect the driver is high or the blood is easy to collect.

An officer can take a sample if the driver is passed out and incapable of providing consent. Wednesday's ruling came after multiple appeals in a 2010 DUI case.

Patrick Nissley was convicted on reckless manslaughter. A blood sample taken while medics attended to Nissley’s injuries, showed he had methamphetamine and heroin in his system.  The court ordered a follow up hearing to determine whether his blood was taken without his consent.

Holliday Moore was a reporter at KJZZ from 2017 to 2020.