Skip to content
  • GET LEGAL HELP TODAY   |
  • (612) 255-3820
  • Home
  • About
    • Derek Archambault
  • Practice Areas
    • Assault
    • Controlled Substance Crimes
    • Criminal Defense
    • Driving While Impaired (DWI)
    • Expungement
    • Harassment
    • Probation Violations
    • Sex Crimes
    • Theft and Property Crimes
    • Weapon Offenses
  • Blog
  • FAQs
  • Case Results
  • Free Consultation
Menu
  • Home
  • About
    • Derek Archambault
  • Practice Areas
    • Assault
    • Controlled Substance Crimes
    • Criminal Defense
    • Driving While Impaired (DWI)
    • Expungement
    • Harassment
    • Probation Violations
    • Sex Crimes
    • Theft and Property Crimes
    • Weapon Offenses
  • Blog
  • FAQs
  • Case Results
  • Free Consultation
FREE CONSULTATION
DWI Lawyer
  • 11
  • Sep

How A DWI Lawyer Can Challenge Breathalyzer Test Results

  • Uncategorized

Being charged with a DWI (Driving While Intoxicated) can be a daunting experience, especially when Breathalyzer test results are used as evidence against you. Many people assume that these tests are foolproof, but the reality is that Breathalyzer tests can be flawed in various ways. A skilled DWI lawyer can challenge the validity of the test results and potentially have them dismissed as evidence, strengthening your defense. Understanding how a DWI lawyer can challenge Breathalyzer test results is critical for anyone facing such charges.

1. Questioning The Accuracy Of The Breathalyzer Device

One of the first things a DWI lawyer may investigate is whether the Breathalyzer device used was properly calibrated and maintained. These devices require regular maintenance to ensure their accuracy, and failure to do so can result in false readings. If the device used in your case was not calibrated according to the manufacturer’s specifications, or if it hadn’t undergone recent maintenance, your lawyer can argue that the test results are unreliable.

2. Challenging The Officer’s Administration Of The Test

Even if the Breathalyzer device is in working order, the test must be administered correctly for the results to be valid. DWI lawyers will closely examine how the test was conducted by the arresting officer. Law enforcement officers must follow strict guidelines when administering Breathalyzer tests, and any deviation from these procedures can compromise the results.

For example, officers are typically required to observe the driver for a specific amount of time (usually 15 to 20 minutes) before administering the test to ensure that they do not eat, drink, or regurgitate, as this can affect the results. If this observation period is skipped or shortened, your lawyer may argue that the results are compromised and should not be admitted as evidence.

3. Examining Health Conditions And Medications

Certain health conditions and medications can affect Breathalyzer test results. For instance, individuals with acid reflux, diabetes, or a high-protein diet may produce higher blood alcohol content (BAC) readings due to the presence of substances in their breath that mimic alcohol. Additionally, certain medications or medical conditions, such as asthma, can cause inaccurate results.

A DWI lawyer from Rasmussen & Miner can gather medical evidence to show how your specific health conditions or medications may have interfered with the Breathalyzer test results. This can be an effective way to challenge the validity of the test and reduce the strength of the prosecution’s case.

4. Questioning Environmental Factors

Environmental factors, such as the presence of chemicals in the testing environment, can also affect Breathalyzer results. If you were tested in an area where certain chemicals, such as gasoline, paint fumes, or cleaning agents, were present, it could have skewed the results. Breathalyzers detect more than just alcohol and may register other substances that interfere with the accuracy of the reading.

A DWI lawyer will investigate whether any environmental factors could have influenced your test results and use this to challenge the prosecution’s evidence.

Conclusion

Breathalyzer test results are not always as reliable as they may seem, and a skilled DWI lawyer can identify several ways to challenge the validity of these tests. By questioning the accuracy of the device, the officer’s administration of the test, health conditions, environmental factors, and the choice of test itself, a DWI lawyer can build a strong defense and potentially have the Breathalyzer evidence dismissed, giving you a better chance of avoiding a conviction.

PrevPrevious Article
Next ArticleNext

Let’s Talk

Please enable JavaScript in your browser to complete this form.
Name *
Checkboxes *

Please review our Privacy Policy

Loading

Start Your Defense

No obligation, no pressure, and no annoying follow up calls. For a free legal consultation, fill out the form or text/call anytime.
  • New Clients: (612) 255-3820
  • Existing Clients: (612) 488-5455

Schedule A Consultation Today!

Please enable JavaScript in your browser to complete this form.
Checkboxes *

Please review our Privacy Policy

Loading
About Me

I never expected to be called to work in criminal defense.  For many years I found work as a prosecutor fulfilling.  But over time that changed.  Rather than making a difference, I was a cog in the machine.  Cases stopped feeling like people and became names on paper.   And I realized that often the true difference makers in the system are the defense attorneys.

I founded Archambault Criminal Defense because I want to use my skills to help people.  Because I want my cases to be about people and not just names on paper.  Because I know I have unique expertise and experience that can truly help people move forward and get on with their lives.

Learn more
  • Practice Areas
  • Contact
  • FAQs
  • Privacy Policy & Disclaimer
  • Practice Areas
  • Contact
  • FAQs
  • Privacy Policy & Disclaimer

contact

  • New Clients:
    (612) 255-3820
  • Existing Clients:
    (612) 488-5455
  • [email protected]
400 S 4th St 3rd Floor, Minneapolis, MN 55415

Also Serving St. Louis Park MN.

FREE CONSULTATION
  • Criminal Defense Lawyer Minneapolis MN
  • Assault Lawyer Minneapolis MN
  • DWI Lawyer Minneapolis MN
  • Drug Crime Lawyer Minneapolis MN
  • Felony Lawyer Minneapolis MN
  • Misdemeanor Lawyer Minneapolis MN
  • Domestic Assault Lawyer Minneapolis MN
  • Probation Violation Lawyer Minneapolis MN
  • Expungement Lawyer Minneapolis MN
  • Shoplifting Lawyer Minneapolis MN
Menu
  • Criminal Defense Lawyer Minneapolis MN
  • Assault Lawyer Minneapolis MN
  • DWI Lawyer Minneapolis MN
  • Drug Crime Lawyer Minneapolis MN
  • Felony Lawyer Minneapolis MN
  • Misdemeanor Lawyer Minneapolis MN
  • Domestic Assault Lawyer Minneapolis MN
  • Probation Violation Lawyer Minneapolis MN
  • Expungement Lawyer Minneapolis MN
  • Shoplifting Lawyer Minneapolis MN

The information contained in this website is not legal advice, but is provided for general informational purposes only.  Users should not act or fail to act in reliance on the information in this website without first consulting with a qualified attorney.  Viewing this website, acting upon information contained in this website, or contacting Archambault Criminal Defense does not create an attorney-client relationship.  Any attorney-client relationship is formed only by express written agreement.

© 2025 Archambault Criminal Defense | Sitemap | Terms and Conditions