Do You Have to Take a Breathalyzer in Arizona? Implied Consent Explained

You can refuse a breathalyzer in Arizona — but the refusal itself triggers an automatic 12-month driver’s license suspension under the state’s implied consent law, even if you are never convicted of DUI. By driving on an Arizona road, you have already agreed to submit to chemical testing if a police officer lawfully arrests you on suspicion of driving impaired. If you have been arrested or asked to take a breath, blood, or urine test, the DUI defense team at The Law Office of James E. Novak can review what happened and explain what comes next.

What Is Arizona’s Implied Consent Law?

Arizona’s implied consent law is codified at A.R.S. § 28-1321. The rule is simple in concept: by operating a motor vehicle on a public road in Arizona, you have already given consent to submit to chemical testing — breath, blood, urine, or other bodily substance — if a law enforcement officer lawfully arrests you on reasonable grounds to believe you were driving under the influence.

The statute does not eliminate your right to say no. You can physically refuse to provide a breath sample or extend your arm for a blood draw. But the law treats that refusal as a violation of the agreement you entered when you got your license — and it imposes automatic civil consequences through the Arizona Motor Vehicle Division (MVD) that are independent of the criminal DUI case.

James Novak is a former Maricopa County prosecutor who has spent more than 20 years defending DUI cases across Tempe, Mesa, Chandler, Gilbert, Scottsdale, and Phoenix. The Law Office of James E. Novak regularly handles implied consent refusal cases and represents drivers at the 15-day MVD administrative hearing — a deadline most first-time DUI clients do not realize is running.

What Happens If You Refuse a Breathalyzer in Arizona?

Refusing a breath, blood, or urine test in Arizona sets a chain of consequences in motion that begins the moment the officer documents the refusal. Here is what follows a first refusal:

• License surrender and temporary permit. The officer takes your Arizona driver’s license and issues a temporary 15-day permit.
• Notice of suspension. You receive written notice that your license will be suspended for 12 months once the temporary permit expires.
• 15-day hearing window. You have 15 days from the date of service to request an administrative hearing with MVD to contest the suspension. Miss this deadline and the suspension takes effect automatically.
• Warrant for testing. The arresting officer can — and very often does — apply for a telephonic search warrant to compel a blood draw. Once granted, the blood test happens regardless of your refusal.
• Use at trial. Prosecutors are permitted to introduce the refusal as evidence of consciousness of guilt at the criminal DUI trial.

A second refusal within 84 months (seven years) doubles the suspension to 24 months. Out-of-state drivers do not have an Arizona license to surrender, but they lose the privilege to drive in Arizona, and Arizona reports the refusal to the driver’s home state under the Driver License Compact.

Can the Police Force You to Take a Test?

Not without a warrant. Arizona courts and the U.S. Supreme Court (in Missouri v. McNeely and Birchfield v. North Dakota) have made clear that nonconsensual blood draws require either valid consent or a search warrant supported by probable cause. The implied consent statute does not eliminate the warrant requirement — it only addresses the civil license consequences of refusing.

In practice, Maricopa County agencies have telephonic and electronic warrant procedures that allow an on-duty judge to issue a warrant within minutes of a refusal. A phlebotomist or trained officer then draws blood at the scene, at the station, or at the hospital. If the State proceeds without a warrant and without valid consent, the test result may be subject to suppression.

The Law Office of James E. Novak frequently challenges blood draws where:

• The warrant was based on an insufficient affidavit or stale information
• Consent was coerced or obtained through misleading statements about the law
• The phlebotomist deviated from accepted clinical procedure
• Chain of custody was broken between the draw and the crime lab
• The crime lab failed to follow its own calibration and quality control protocols

Is Refusing the Test Ever the Right Call?

This is the question most clients ask, and there is no universal answer. Refusing the test means losing your license for at least a year, even if the criminal case is later dismissed. Taking the test means handing the prosecution a number that becomes the centerpiece of its case.

The calculation depends on facts no driver can fully assess in the moment of an arrest — actual BAC, prior DUI history, employment consequences of a license suspension, and the strength of the State’s other evidence. What is clear is that the decision has long-term consequences in both directions. James Novak’s engineering background gives the firm a technical edge in challenging breath and blood test results when a client did submit, and his prosecutorial experience informs the negotiation strategy when a client refused.

If you are reading this after a refusal, your immediate priority is the 15-day MVD hearing deadline. Call (480) 413-1499 or visit the attorney profile to understand what defending the hearing — and the underlying DUI charge — involves.

What Happens If You Submit and Fail the Test?

Submitting to a chemical test and producing a result at or above 0.08% (or 0.04% for a commercial driver) triggers a 90-day administrative license suspension under A.R.S. § 28-1385 — shorter than the 12-month refusal suspension, but still automatic. The first 30 days are a hard suspension with no driving permitted; the remaining 60 days allow restricted driving with an ignition interlock device for work, school, treatment, and probation appointments.

The test result also becomes the foundation of the criminal DUI case under A.R.S. § 28-1381 or § 28-1382. Higher BAC results escalate the charge:

A breath or blood result is not unassailable. Breathalyzer instruments require regular calibration, certified operators, and documented maintenance. Blood evidence depends on phlebotomy procedure, sample preservation, chain of custody, and crime lab protocol. Each link is a potential challenge point.

Frequently Asked Questions

Is a roadside preliminary breath test the same as the official breathalyzer?

No. The handheld preliminary breath test (PBT) that an officer may offer at the roadside in Tempe, Mesa, or anywhere else in Maricopa County is not the evidentiary breath test. The PBT is used to develop probable cause to arrest. The evidentiary test — typically on an Intoxilyzer 8000 — happens after arrest at the station, in a DUI van, or at a hospital. Refusing the PBT does not trigger the implied consent suspension. Refusing the post-arrest evidentiary test does.

Can I change my mind after refusing?

Sometimes. Under A.R.S. § 28-1321, an officer who has recorded a refusal may — but is not required to — allow the driver to rescind the refusal and submit to testing. Officers commonly decline. If the refusal stands, the 12-month suspension applies regardless of any later willingness to test.

Does the implied consent law apply to marijuana and drug DUI cases?

Yes. The statute covers any chemical test for alcohol or any drug, and Arizona’s “impaired to the slightest degree” standard under A.R.S. § 28-1381(A)(1) applies to marijuana, prescription medication, and illegal drugs the same way it applies to alcohol. Refusing a blood draw in a suspected marijuana DUI triggers the same 12-month suspension.

What is the deadline to fight the license suspension?

Fifteen days from the date you were served the notice of suspension. Missing the deadline waives the right to a hearing and the suspension takes effect automatically. A request for a hearing extends the temporary permit until the MVD hearing officer issues a written decision.

Speak with a Maricopa County DUI Defense Attorney

If you refused a breathalyzer or submitted to a test in Tempe, Mesa, Chandler, Gilbert, Scottsdale, Phoenix, or anywhere in Maricopa County, the next 15 days matter. James Novak is a former prosecutor and the author of three DUI defense books, including “101 DUI Defenses.” His firm handles MVD administrative hearings and the underlying criminal DUI case together so the defense is consistent across both proceedings. Call (480) 413-1499 or contact the firm online for a free initial consultation. Available 24/7. Flat affordable fees, no hidden costs.