Challenging Roadside DUI Blood Draws and Police Phlebotomy Errors
Unlike many other states where blood draws must happen in a sterile hospital setting, Arizona allows law enforcement officers themselves to draw your blood. Through the state's Law Enforcement Phlebotomy Program, an officer can pull you over, obtain a search warrant, and extract your blood right at the roadside or in a police station basement.
Prosecutors argue these tests are infallible. However, over my 42 years of criminal defense practice in the Phoenix area, I have learned that a police officer with a weekend certificate in phlebotomy is highly prone to making critical, case-ruining mistakes.
The Legal Standard for a "Qualified Person" under A.R.S. § 28-1388(A)
Arizona Revised Statute § 28-1388(A) states that only a physician, a registered nurse, or another "qualified person" may withdraw blood to determine your alcohol or drug levels.
Arizona courts have ruled that a police phlebotomist is only considered a "qualified person" if they can demonstrate continuous competence through proper training and experience. The Governor's Office of Highway Safety (GOHS) requires these officers to complete strict initial training and undergo mandatory refresher courses every two years to keep their blood-drawing privileges. If the officer who drew your blood allowed their certifications to lapse, or if they failed their periodic proficiency checks, they are legally unqualified. When an unqualified officer pierces your skin, your constitutional rights are violated, and the blood evidence should be completely suppressed.
Common Mistakes Made During Law Enforcement Blood Draws
Even if an officer's certificate is technically active, the chaotic environment of a roadside stop or a police holding cell often leads to poor medical practices. We meticulously review the police body camera footage and medical logs to identify critical errors, such as:
- Improper Sanitation: Cleaning your arm with an alcohol-based wipe right before inserting the needle can introduce outside alcohol into the vial, corrupting the test results.
- Failing to Mix the Sample: To keep the blood from clotting or spoiling, an officer must immediately invert the tube gently exactly 5 to 20 times. Shaking the vial vigorously or forgetting to mix it at all destroys the sample's scientific reliability.
- Nerve Damage and Medical Trauma: Rushed officers frequently miss the vein, causing excessive bruising, hematomas, or nerve pain. Under Arizona law, an unsafe or overly painful blood draw violates your Fourth Amendment protection against unreasonable searches and seizures.
Put 42 Years of Aggressive Local Defense to Work for You.
Do not assume the police followed the rules. Our defense team knows how to sub-surface an officer's hidden training logs and expose procedural shortcuts. Contact Brian DiPietro Law, PLLC today at 623-242-2655 for a free, completely confidential consultation regarding your case.
"An unqualified officer is far more likely to mishandle a sample, leading to serious [Expired Blood Vials & Fermentation] issues."
