August 31, 2026
Infractions

Can You Refuse a Breathalyzer Test in Connecticut? Your Rights Explained

When a police officer pulls you over and asks you to blow into a breathalyzer, your mind races. Should I do it? What if the result is high? What happens if I refuse? Is refusal even legal?

These are questions that flash through people’s minds in seconds — at the side of the road, under pressure, without the benefit of legal advice. That decision can have consequences for both your criminal case and your driver’s license.

This article explains exactly what Connecticut law says about breathalyzer tests, what your rights are, what happens if you refuse, and how the refusal decision affects your case going forward.

If you have already been arrested for DUI in Connecticut — whether you submitted to testing or refused — call Flannery Law to avoid long-term consequences.

What Is Connecticut’s Implied Consent Law?

The foundation of breathalyzer law in Connecticut is the implied consent doctrine. Under Connecticut General Statutes § 14-227b, Connecticut law provides that a person who operates a motor vehicle in the state is deemed to have given consent to a chemical test of their blood, breath, or urine.

You did not sign anything. You were not asked. However, under Connecticut’s implied consent law, a person who operates a motor vehicle is deemed to have consented to chemical testing under the circumstances set out in the statute, including after an arrest for certain DUI-related offenses.

This implied consent applies to blood tests, breath tests, and urine tests. It also applies to the nontestimonial portion of a drug influence evaluation conducted by a drug recognition expert — meaning the physical examination components of a drug impairment evaluation, though not the verbal interview portion.

Understanding implied consent is the starting point for understanding everything else about the breathalyzer decision.

Are There Two Different Breath Tests?

Yes — and this distinction matters enormously. Many people do not realize that there are actually two separate breath tests that may be involved in a DUI stop, and they are treated very differently under Connecticut law.

The Roadside Preliminary Breath Test

At the scene of the traffic stop, before any arrest is made, an officer may ask you to blow into a small handheld device — a preliminary breath test or PBT. This device gives the officer a rough indication of whether alcohol is present and at what approximate level.

The results of this roadside test are generally not admissible as evidence in a criminal trial. The purpose is to help the officer establish probable cause for an arrest — not to prove guilt. The roadside preliminary breath test should not be confused with the post-arrest chemical test governed by Connecticut’s implied consent statute.

The Evidentiary Breath Test at the Station

After an arrest, the officer will request that you submit to a formal evidentiary breath test — typically conducted at the police station using a calibrated, approved testing device. After an arrest, the officer may request a blood, breath, or urine test under Connecticut’s implied consent statute, subject to the requirements of §14-227b.

The results of this test are admissible in criminal proceedings under § 14-227a and are used in both the criminal case and the DMV administrative hearing. This is the test where the refusal decision carries real legal weight.

What Happens If You Refuse the Evidentiary Breath Test?

Refusing the evidentiary breath test is legal in Connecticut — but it is not without consequences. Under § 14-227b, refusal triggers an immediate set of administrative actions.

Immediate License Revocation

If the person refuses the requested test, or submits to a test that indicates an elevated blood alcohol content, the officer acting on behalf of the DMV immediately revokes and takes possession of the operator’s license for a 24-hour period, subject to the circumstances specified by §14-227b.

Administrative License Suspension

Upon the officer transmitting a refusal report to the Department of Motor Vehicles, the DMV may suspend your license administratively. Under § 14-227b(i)(2)(C), the ignition interlock device requirements following restoration for a refusal are:

First refusal: One year IID requirement following license restoration
Second refusal: Two years IID requirement
Third or subsequent refusal: Three years IID requirement

These IID periods for refusal are actually longer than those that apply when a driver submits to testing and registers an elevated BAC. This is one of the most important practical consequences of refusal that many people do not anticipate.

The Seven-Day Hearing Deadline

Just as with a failed test, a refusal triggers the right to a DMV administrative hearing. Under § 14-227b(e), you must request the DMV hearing within seven days after the date the suspension notice was mailed. If you do not request a hearing within the required period, the suspension will be affirmed.

The DMV hearing for a refusal is limited to four issues — whether the officer had probable cause to arrest, whether you were placed under arrest, whether you refused to submit to the test or nontestimonial portion of a drug influence evaluation, and whether you were operating the motor vehicle. Each of these can be challenged.

Is Refusal Admissible as Evidence Against You?

This is the part of the refusal decision that surprises many people — and it is critical to understand.

Under Connecticut General Statutes § 14-227a(e), evidence that you refused to submit to a chemical test is admissible in your criminal case. If your case goes to trial, the prosecutor can tell the jury that you refused testing. The court will instruct the jury that they may consider the refusal when evaluating the evidence — the prosecution may argue that the refusal is relevant to the defendant’s conduct or state of mind.

This does not mean refusal is always the wrong decision. But it does mean that refusal is not a clean escape from the consequences of a DUI arrest. It trades one type of evidence — a BAC reading — for another — the fact of refusal — and in some cases the latter can be equally or more damaging in front of a jury.

What Are Your Rights Before Taking the Test?

Connecticut law provides important protections before the evidentiary test is administered.

The Right to Contact an Attorney

Under § 14-227b(b)(1)(B), before submitting to a chemical test, you must be afforded a reasonable opportunity to telephone an attorney. This is a genuine legal right — not a suggestion. If you wish to consult with an attorney before making the submit-or-refuse decision, you are entitled to that opportunity. This is the moment to use that right.

The Advisory You Must Receive

Before requesting the test, the officer must advise you under § 14-227b(b)(1) that:

You have the right to telephone an attorney before submitting to the test
Evidence of refusal is admissible and may be used against you in a criminal prosecution
Your license or operating privilege may be suspended if you refuse, if you submit and have an elevated BAC, or if the officer concludes through investigation that you were operating under the influence

If the officer fails to provide this advisory properly, it may affect the admissibility of the refusal or the test results in subsequent proceedings — another reason why the specific facts of what happened matter enormously.

Should You Refuse or Submit? The Honest Answer

There is no universal right answer to this question. Anyone who tells you to always refuse or always submit is giving you advice that ignores the specific facts that determine which choice is better in any given situation. Here is an honest breakdown of the considerations.

Arguments for Submitting to the Test

If your BAC is likely to be at or near the legal limit — and you are not certain it is above 0.08% — submitting may produce a result that is either below the threshold or close enough to challenge. A borderline BAC result gives your defense attorney something to work with in challenging the accuracy of the testing equipment, the administration of the test, or the timing of the test relative to your last drink.

Submitting also avoids the refusal being used against you at trial. In cases where the evidence of impairment is otherwise thin — no erratic driving, no strong field sobriety test failures — a refusal can actually fill evidentiary gaps that the prosecution would otherwise struggle to fill.

Arguments for Refusing the Test

If your BAC is likely to be significantly above the legal limit, a test result creates strong, difficult-to-challenge evidence that a refusal does not.

The Bottom Line

If you have an opportunity to consult an attorney before the test, Connecticut law provides you with a reasonable opportunity to do so. Under § 14-227b(b)(1)(B), you have the right to call an attorney before making it. Use that right. If you are unable to reach an attorney in the available time, understand that both choices carry real consequences and neither is a guaranteed protection against DUI charges.

Contact Flannery Law if you need guidance in the moment or after an arrest.

What About Blood and Urine Tests?

Connecticut’s implied consent law covers blood and urine tests as well as breath tests. Connecticut General Statute § 14-227b permits the police officer to select the type of chemical test. If you refuse or are unable to submit to a blood test, the officer shall designate another test — typically urine. If you submit to a breath test and the officer has reasonable cause to also test for drugs, an additional chemical test of a different type may be administered.

Blood tests are more commonly used when the driver is hospitalized following an accident, when the officer suspects drug impairment rather than alcohol, or when the breath test equipment is unavailable. The implied consent law applies to blood, breath, and urine testing, although the specific procedures and consequences can depend on the circumstances.

What If You Have a Medical Condition?

Under § 14-227b(l), the implied consent provisions do not apply to any person whose physical condition is such that, according to competent medical advice, the test would be inadvisable. If you have a medical condition that makes a particular type of test physically unsafe or medically contraindicated, that condition may be relevant to whether the statutory medical exception applies and it should be handled carefully with legal guidance.

The Drug Recognition Expert and Drug Impairment

Connecticut’s DUI laws also address suspected drug impairment. Connecticut’s DUI enforcement framework includes drug recognition experts — specially trained officers who conduct drug influence evaluations.

Under § 14-227b, implied consent extends to the nontestimonial portion of a drug influence evaluation conducted by a drug recognition expert. This covers the physical examination components of the evaluation — eye tests, vital signs, muscle tone, and similar observations. It does not extend to the verbal interview portion, and refusal to participate in the verbal interview cannot be treated as a refusal under the implied consent law.

The drug recognition expert framework matters particularly for drivers who have consumed cannabis, prescription medications, or other substances that a standard breath test will not detect.

How Does Refusal Affect the DMV Hearing?

The DMV administrative hearing following a refusal is governed by § 14-227b(g)(2). The hearing is limited to four issues — probable cause for the arrest, whether the arrest occurred, whether the refusal occurred, and whether the person was operating the motor vehicle.

The key issue in a refusal hearing is often whether the refusal actually occurred as the officer reported. If there is a dispute about whether you genuinely refused or whether you were physically unable to complete the test, or whether the officer properly administered the advisory before requesting the test, these are all contestable issues at the hearing.

If the DMV does not affirm the suspension following the administrative hearing, the administrative suspension may not take effect. The DMV proceeding is separate from the criminal case.

What Happens to Younger Drivers Who Refuse?

For drivers under 21, Connecticut’s zero-tolerance law under Connecticut General Statutes § 14-227g sets a BAC threshold of just 0.02%. The implied consent framework applies equally to these drivers, and refusal carries the same administrative consequences.

Additionally, under § 14-111(b)(2), license suspension consequences for under-21 drivers who violate the DUI provisions are calculated differently — starting at 30 days for a first violation and escalating with each subsequent offense.

Frequently Asked Questions

Can the police force me to take a breathalyzer test in Connecticut? The police cannot physically force you to blow into a device. However, refusal triggers immediate administrative consequences including license suspension and the admissibility of your refusal as evidence in the criminal case. It is a legal choice — but not a consequence-free one.

Does refusing a breathalyzer mean I will not be charged with DUI? No. A DUI charge does not necessarily require a chemical-test result. Connecticut law permits DUI prosecutions based on evidence of impairment, and the DMV administrative process is separate from the criminal case.

Will refusing a breathalyzer automatically suspend my license? Yes. A refusal can result in an administrative license suspension under Connecticut’s implied consent law, separate from the criminal DUI case. You have the right to request a DMV hearing within seven days of the suspension notice to contest it.

Is a breathalyzer refusal worse than failing the test? It depends on the circumstances. There is no universal answer. The legal consequences and evidentiary significance of a refusal or chemical-test result depend on the specific facts and evidence in the case. There is no universal answer — the specific facts of each case determine which is worse.

What happens if I refuse a blood test but agree to a breath test? Connecticut law allows the officer to request a specific type of test. If you refuse one type, the officer may designate another. Refusing one while accepting another does not fully eliminate the implied consent consequences — the specific circumstances affect how this plays out legally.

Can I change my mind after refusing? Whether a refusal occurred can depend on the specific circumstances, including what the driver said and did and how the test was administered. However, the specific facts of what was said and when matter — this is a situation where consulting an attorney immediately is critical.

What should I do right now if I refused a breathalyzer at my arrest? Contact an experienced DUI defense attorney immediately. The seven-day DMV hearing deadline begins running from the mailing of the suspension notice. Failing to request a hearing within the required deadline can result in the suspension being affirmed.

Courts Where Flannery Law Handles DUI Cases in Connecticut

From our offices in Hartford, Westport, and Farmington, we represent clients facing DUI charges and breathalyzer-related issues across Connecticut. Our team appears regularly in the following courts:

Connecticut Superior Courts:

Charging practices and plea negotiations may vary by courthouse

The Decision Matters — So Does What Comes After

The breathalyzer decision is one of the most consequential choices in a DUI case — but it is not the last one. Whether you submitted to testing or refused, there are real legal options available to challenge the outcome, contest the administrative suspension, and fight the criminal charge.

If you have been arrested for DUI, it is important to understand both the criminal case and any separate DMV proceedings that may affect your driving privileges.

Call Flannery Law or visit flannery.law for a free consultation. We defend DUI cases across Connecticut and we are ready to help.

Legal Disclaimer: The information and articles on this website are provided for general informational purposes only and are not legal advice. Viewing this website does not create an attorney-client relationship. Laws and legal developments may change, and some content may not reflect the most recent updates. Case outcomes depend on the specific facts, prior record where applicable, relevant statutes, and court rulings.