Minnesota DWI Testing and Refusal: Breath, Blood, and Urine Tests

Identify the Test Before Drawing Conclusions

People often describe every device as “the breathalyzer.” A more useful description identifies where testing occurred, the device used, the officer’s instructions, and whether the request concerned breath, blood, or urine. Minnesota has separate provisions for preliminary screening, evidentiary chemical testing, and warrant-related licensing action. [1] [2] [4]

Write a sequence rather than a conclusion: roadside request, sample or refusal, arrest, advisory, attorney calls, warrant service, sample collection, and release. An accurate chronology can reveal whether two records concern the same test or entirely different steps.

A Roadside Breath Screen Is a Preliminary Tool

Section 169A.41 authorizes preliminary breath screening when the statutory grounds exist. Its principal functions are deciding whether to arrest and whether to require further chemical testing. The statute restricts courtroom use of the result but lists exceptions. It is inaccurate to say that a preliminary result can never be used in court. [1]

A roadside result should not simply be substituted for the evidentiary testing record. Preserve the officer’s recorded explanation and the exact number, if one was given. The legal significance of a preliminary refusal is also different from refusing a test covered by the criminal test-refusal statute. [1] [3]

Evidentiary Breath Testing and the Advisory

When requesting an evidentiary breath test, the officer must provide the statutory advisory, including notice that refusing the test is a crime and that the person has a limited right to consult an attorney. That opportunity cannot unreasonably delay testing. The advisory is part of a defined process, not an unlimited right to postpone a decision. [2]

The relevant record may include the advisory recording, telephone access, numbers attempted, the time made available, the person’s requests, and the officer’s responses. Do not reduce a counsel issue to a stopwatch alone; the conversation and circumstances need to be examined.

Blood and Urine Tests Follow Different Requirements

Under section 169A.51, subdivision 3, blood or urine testing requires a search warrant or a judicially recognized exception. Section 171.177 separately requires an advisory that refusing a warrant-directed blood or urine test is a crime. The breath-test advisory and its limited attorney-consultation provision should not automatically be treated as the advisory governing every blood or urine request. [2] [4]

A warrant review should include the warrant application, supporting statement, signed warrant, service information, and sample-collection record. Distinguish a challenge to the authority for the search from a challenge to how the sample was collected or analyzed. Either question can matter, but they involve different evidence.

What Makes Test Refusal a Criminal Allegation?

Section 169A.20, subdivision 2, covers refusal of specified breath testing and blood or urine testing required by a search warrant. The statute does not make every declined request during a traffic stop the same refusal offense. The prosecution’s particular theory and the legal prerequisites must be identified before evaluating the person’s words or conduct. [3]

A disputed refusal may involve more than the word “no.” Record any instructions the person did not understand, statements about medical problems, attempts to provide a sample, and requests for clarification. Those facts require comparison with the applicable testing standards rather than an assumption that inability and deliberate refusal are interchangeable.

Testing Reliability Is a Separate Inquiry

Minnesota’s approved evidentiary breath-testing procedure requires the statutory sample and control sequence. The statute addresses adequate and deficient samples, repeat testing, and circumstances classified as refusal for license purposes. Blood withdrawal also has personnel requirements. Identifying a procedural concern starts a legal and scientific review; it does not itself establish that a result must be excluded. [2]

The useful materials differ by test. Breath cases may require instrument output and operator records. Laboratory cases may require collection times, sealing and transfer information, and the laboratory’s result and supporting documentation. Keep medical records in their original form and identify any condition that was communicated to the officer.

Can a Driver Obtain an Additional Test?

Section 169A.51, subdivision 7(b), provides for an additional chemical test by a person of the driver’s choosing, subject to conditions about place, timing, and expense. Failure to obtain another test does not automatically exclude the police test. Whether officers prevented or denied an additional test is an important distinction in the statute. [2]

Preserve the actual request and response. “I wanted another test” does not identify when it was requested, who was contacted, what arrangements were proposed, or what happened next. A chronology and available recordings are more informative than a later general recollection.

Testing Can Create a Separate License Case

A refusal or result may trigger administrative driving consequences apart from prosecution. Section 169A.53 and section 171.177 provide review procedures for different testing routes. Identify which statute appears on the notice. The applicable filing period is not safely calculated from the next criminal hearing or from a general internet summary. [4] [5] [6]

• Every advisory, test record, warrant, and notice already provided.
• The sequence of requests and responses, including attorney-call attempts.
• Medical concerns communicated during testing.
• The complete license notice and its receipt date.
• Original recordings or information identifying where recordings may exist.