In Arizona, Can I Refuse to Take a BAC Test During a DUI Stop?

In Arizona, you technically can refuse a BAC (blood alcohol content) test during a DUI stop — but the consequences are significant. Arizona’s implied consent law under A.R.S. § 28-1321 means that by driving on Arizona roads, you have already agreed to submit to chemical testing if lawfully arrested for DUI. Refusing triggers an automatic 12-month license suspension, and officers can often obtain a warrant for your blood anyway. Understanding your rights and the real-world consequences of refusal is essential. At Oliverson Law DUI & Criminal Defense, our founder Derek Oliverson is a former police officer who has administered these tests himself. Call (480) 582-3637 for a free case evaluation.

Key Takeaways

• Roadside Tests Are Voluntary: Portable breath tests and field sobriety tests at the roadside are voluntary and you can decline them without automatic penalty.
• Post-Arrest Chemical Tests Carry Consequences: Once lawfully arrested, refusing a breath, blood, or urine test triggers a 12-month license suspension (24 months with a prior) under Arizona’s implied consent law.
• Officers Can Get a Warrant: Even if you refuse, police can obtain a telephonic warrant for a blood draw. Refusal does not prevent testing — it just adds license penalties on top of any DUI charges.

The Difference Between Roadside and Post-Arrest Testing

There are two distinct phases of BAC testing during a DUI stop, and your rights are different at each stage. Understanding this distinction is critical.

Roadside Portable Breath Test (PBT)

During the initial stop, an officer may ask you to blow into a portable breath testing device. This is a screening tool, not the official evidentiary test. You can decline this test without triggering implied consent penalties. The results of a PBT are generally not admissible in court — they are used only to help the officer establish probable cause for arrest.

Post-Arrest Evidentiary Test

After a lawful arrest for DUI, the officer will request that you submit to an official chemical test — typically breath (Intoxilyzer 8000) or blood. This is where implied consent kicks in. Refusing this test triggers automatic administrative penalties separate from any criminal DUI charges.

Consequences of Refusing a BAC Test

If you refuse the post-arrest chemical test, the officer will serve you with an Admin Per Se/Implied Consent Affidavit. Your license is immediately confiscated and replaced with a 15-day temporary permit. After 15 days, your license is suspended for 12 months (first refusal) or 24 months (if you have a prior DUI or refusal within 84 months). You have 15 days to request an MVD hearing to contest the suspension — missing this deadline makes the suspension automatic.

Can Officers Force a Blood Draw?

Yes. Under Missouri v. McNeely and Arizona case law, officers can obtain a telephonic warrant from a judge to compel a blood draw. This is routine practice in Arizona — most DUI task forces have judges on call specifically for this purpose. This means refusing does not prevent the State from obtaining your BAC. Instead, you face both the BAC evidence and the additional refusal suspension.

Related Articles

• Stopped for a DUI? Here’s How to Proceed
• What Makes a DUI a Felony in Arizona?
• DUI Checkpoint: What Are My Rights?

Frequently Asked Questions

Can I refuse a breathalyzer during a DUI stop in Arizona? You can refuse the roadside portable breath test without penalty. However, if you are arrested and refuse the official evidentiary chemical test, Arizona’s implied consent law triggers an automatic 12-month license suspension.

Will refusing a BAC test help my DUI case? Not necessarily. While refusing eliminates direct BAC evidence, officers can obtain a warrant for blood. Additionally, prosecutors can use the fact that you refused as evidence of consciousness of guilt. And you face a 12-month license suspension on top of any DUI penalties.

How long is the license suspension for refusing a BAC test? 12 months for a first refusal, 24 months if you have a prior DUI or refusal within the last 84 months. You may be eligible for a restricted license with an ignition interlock device after the first 90 days.

Can I fight the refusal suspension? Yes — you have 15 days from the date the affidavit is served to request a hearing with the MVD Executive Hearing Office. At this hearing, your attorney can challenge whether the arrest was lawful, whether the officer properly advised you of the consequences, and whether the refusal was knowing and voluntary.