Should I Take the Breathalyzer in Massachusetts?

Should I take the breathalyzer in Massachusetts? Here, “breathalyzer” means the evidentiary police-station breath test requested after an alcohol OUI arrest, not a roadside portable or preliminary breath test. No single choice produces the best result in every case. Taking the station test can create potentially admissible blood alcohol evidence and, after a qualifying result, an immediate license suspension. Refusing prevents a station breath result but ordinarily causes a much longer administrative suspension.

The consequences depend on the person’s age, prior convictions and program assignments, commercial-license status, medical circumstances, and eligibility under G.L. c. 90, § 24D. The officer requests the decision at the station, when there usually has been no opportunity for counsel to review the stop, arrest, warnings, or breath-instrument records.

This page addresses the police-station breath test after an arrest for OUI involving alcohol. Detailed suspension periods, review procedures, hardship rules, and reinstatement requirements appear in the firm’s Massachusetts OUI license-suspension guide. Related charge pages appear in the OUI and motor vehicle defense hub.

The Police-Station Test and the Roadside Test

A roadside portable or preliminary breath test is a screening device used during the officer’s probable-cause assessment. It is not the evidentiary station test governed by 501 CMR 2.00. Declining a roadside test does not itself produce the chemical-test-refusal suspension in G.L. c. 90, § 24(1)(f), and a roadside reading is generally not substantive trial proof of a person’s blood alcohol percentage.

The station test is administered after arrest on an approved infrared breath-testing device. Massachusetts uses the Draeger Alcotest 9510 for police-station breath testing. G.L. c. 90, § 24(1)(f) governs the request after an arrest for operating under the influence of intoxicating liquor. The officer must give the approved warning about the consequences of refusal.

The ordinary implied-consent provision governs breath testing and, in limited circumstances, blood testing. It does not govern urine testing. Deemed consent to blood applies only when the person was brought for treatment to a licensed medical facility and does not apply to a person with hemophilia, diabetes, or another condition requiring anticoagulant use.

For a simple OUI prosecution, police may obtain an admissible chemical blood test or analysis only with the person’s actual consent; obtaining a warrant does not satisfy that statutory consent requirement. Courts analyze independently created medical records and a later mathematical conversion of a hospital serum or plasma result under different evidentiary rules. The ordinary Section 24 refusal and result provisions do not govern a drug-only OUI allegation.

A person does not have a constitutional right to consult counsel before deciding whether to take the breath test. In Commonwealth v. Neary-French, 475 Mass. 167 (2016), the Supreme Judicial Court held that the constitutional right to counsel had not attached at that point. The person therefore must decide immediately based on the statutory warning and the relevant circumstances.

Consequences of Taking the Test

For a driver age 21 or older, a blood alcohol percentage of .08 or greater triggers the result-based suspension in Section 24(1)(f)(2). The suspension becomes effective on notice and lasts until disposition of the prosecuted offense, but not longer than 30 days. Any suspension arising from a later court disposition is governed separately.

An admissible result of .08 or greater can satisfy the blood alcohol element of the per se theory. It does not establish every element of OUI. The Commonwealth must still prove operation, a place covered by Section 24, the result’s relationship to the time of operation, and every element beyond a reasonable doubt.

A result below .08 does not require dismissal. The Commonwealth may proceed under an impairment theory using properly admitted evidence of driving, speech, appearance, coordination, admissions, and field sobriety performance. For a person under age 21, .02 is an administrative license threshold, not a separate Massachusetts criminal per se OUI threshold.

Admissibility also requires an adequate foundation. Under G.L. c. 90, § 24K, a certified operator must use a certified infrared breath-testing device and follow the approved methods.

The current regulatory sequence includes documented consent; observation of the arrested person for no less than 15 minutes immediately before the test; one adequate breath sample, one control-standard analysis, and a second adequate breath sample; and breath samples within ±0.020 BAC units. The Commonwealth also must establish that the device was functioning and that the required periodic-testing program existed and was followed.

Some procedural weaknesses affect evidentiary weight rather than admissibility. A material failure to satisfy a foundational requirement can require exclusion. Counsel must evaluate the applicable law and test records to determine how to present a particular issue.

Under the Ananias orders and Commonwealth v. Hallinan, the historical exclusion and postconviction misconduct presumption apply to results from an Alcotest 9510 device last calibrated and certified before April 18, 2019.

A defendant seeking to withdraw a plea under that misconduct framework still must show a reasonable probability that the misconduct affected the decision to resolve the case; relief is not automatic. A result from a device calibrated and certified on or after April 18, 2019 may be admitted if the Commonwealth establishes the current statutory and regulatory foundation.

Consequences of Refusing the Test

A refusal does not create a separate criminal charge, but it causes an immediate Registry suspension and a 12-hour vehicle impound. The ordinary suspension is 180 days for a person age 21 or older with no qualifying prior conviction or program assignment. Longer periods apply to a person under 21 or a person with qualifying history.

The ordinary period is three years for a person under 21 or with one qualifying prior, five years with two, and lifetime with three or more. A prior conviction for OUI causing serious bodily injury under G.L. c. 90, § 24L produces a 10-year refusal suspension.

Lifetime revocation applies after a prior conviction for homicide by motor vehicle while under the influence of an intoxicating substance under § 24G(a), homicide by motor vehicle based on an alcohol percentage of .08 or greater or operation under the influence of intoxicating liquor under § 24G(b), or manslaughter while operating a motor vehicle under G.L. c. 265, § 13½.

In the current prior-history calculation, the Registry includes qualifying court-ordered alcohol or controlled-substance program assignments. A prior continuance without a finding may therefore affect the refusal period even if the case was later dismissed.

Refusal evidence generally may not be admitted at the criminal trial because the act of refusing is testimonial under Article 12 of the Massachusetts Declaration of Rights. The absence of a station result does not require dismissal. The Commonwealth may rely on other admissible evidence.

A different evidentiary rule can apply when a person first consents but then fails to provide the required samples. After the necessary operator and device foundation, evidence of an incomplete sample sequence may be admissible without being treated as prohibited evidence of an explicit refusal. Commonwealth v. Daigle, 99 Mass. App. Ct. 107 (2021).

A refusal suspension must run consecutively to additional suspension periods arising from the same incident and to another refusal suspension. That rule does not eliminate every form of limited relief. Section 24D contains a same-incident hardship exception for an eligible participant, and a favorable criminal disposition creates a separate restoration procedure.

Age, Prior Records, and Commercial Licenses

A person under age 21 faces different administrative rules. A result of .02 or greater can trigger the result-based suspension. A result of .02 or greater or a chemical-test refusal can also trigger a separate youth suspension under G.L. c. 90, § 24P. The ordinary Section 24P period is 180 days, or one year if the person was under 18. Eligible people may receive the program-based waiver or reduction specified in that section.

A refusal by a person under 21 ordinarily causes a three-year refusal suspension even without a qualifying prior. An adult with one qualifying conviction or program assignment ordinarily receives the same period. Specified serious prior convictions can change the result further. The precise record therefore matters more than an informal label such as first or second offense.

Commercial-license consequences also require separate analysis. The .04 threshold in G.L. c. 90F applies when a person operates a commercial motor vehicle. Separately, federal regulations prohibit a covered driver from performing safety-sensitive functions at .04 or greater. The Massachusetts criminal per se threshold under G.L. c. 90, § 24 remains .08.

Under G.L. c. 90F, § 9, a first listed OUI conviction or refusal ordinarily produces a commercial disqualification of not less than one year, including when the incident involved a noncommercial vehicle. The period is three years when the violation occurred while operating a commercial vehicle transporting placarded hazardous material.

A second listed event from a separate incident ordinarily produces lifetime disqualification, subject to possible reduction to no less than 10 years under the statutory and regulatory rehabilitation authority. Under the definition in G.L. c. 90F, § 1, an admission to sufficient facts followed by a continuance without a finding is treated as a conviction. The disqualification concerns commercial driving privileges; any noncommercial hardship privilege is a separate question.

Immediate RMV and Court Deadlines

A person suspended for refusal must exercise the statutory Registry hearing right within 15 days of the suspension. The Registry currently conducts these hearings at the Boston (Haymarket) RMV Service Center. The hearing concerns reasonable grounds to believe the person operated under the influence of intoxicating liquor on a covered way or place, arrest, and refusal.

The initial hearing is not before the Board of Appeal. A person aggrieved by the Registry’s final decision may petition the District Court for the judicial district where the offense occurred within 30 days. Review proceeds on the Registry record, and filing does not automatically stay the suspension. Current information appears in the firm’s OUI license suspension and RMV hearing FAQs.

A separate 10-day court procedure applies to a breath-result suspension. That narrow review requires a blood test administered within a reasonable period after the breath test showing a percentage below .08, or below .02 for a person under 21. It is not a general hearing about the instrument, the operator, or the prosecution’s trial evidence.

A dismissal or not-guilty finding does not end a refusal suspension. The restoration provision covers charges under Section 24, including OUI and related motor-vehicle offenses; Section 24G, homicide by motor vehicle; Section 24L, OUI causing serious bodily injury; and G.L. c. 265, § 13½, manslaughter while operating a motor vehicle. After a not-guilty finding or dismissal of all covered charges, and if no other alcohol-related charge remains pending, the defendant may request restoration in the court that took final action.

The statute provides a rebuttable presumption in favor of restoration unless the Commonwealth proves by a fair preponderance that restoration would likely endanger public safety.

Under Commonwealth v. Richards, 480 Mass. 413 (2018), the request must be made and heard immediately after the favorable disposition. It is not a later hardship application based on changed circumstances.

G.L. c. 90, § 24D permits an otherwise eligible participant to apply for a discretionary hardship license immediately after entering the required program, including during a qualifying refusal or youth suspension from the same incident. The underlying suspension remains in effect. Eligibility and document requirements appear in the firm’s Section 24D hardship-license guide.

Criminal-Case and Registry Advice

Police and Registry notices should be preserved immediately. In a result case, the breath-test ticket, booking video, operator certification, and instrument calibration, certification, maintenance, and test records may matter. In a refusal case, counsel should review the suspension notice before the 15-day period expires.

Under G.L. c. 263, § 5A, police must inform a person arrested for alcohol OUI at booking of the right to an immediate physician examination at the person’s request and expense, and provide a reasonable opportunity to obtain one. Police must also provide a copy of Section 5A unless its text is conspicuously posted where the person can access it.

Under Section 24(1)(e), a person must be afforded a reasonable opportunity for an independent blood alcohol test at the person’s request and expense.

Attorney Joe Serpa represents defendants in the criminal OUI case and advises them about the related Registry process. The firm does not appear for clients at Registry hearings. Readers can find information about the charge, evidence, motions, and trial defenses in the firm’s Massachusetts OUI defense guide.

Readers can follow the sequence from booking through arraignment, discovery, motions, and resolution in the firm’s discussion of what happens after a Massachusetts OUI arrest. For an immediate review of the breath-test decision or an approaching court or Registry deadline, call Serpa Law Office at 617-936-0201.

Last Reviewed: August 2026