Learn about how we challenge evidence on every DUI case.

DUI Police Report Errors

Challenging Incriminating Evidence

When a person is stopped for DUI in the state of Washington, the law enforcement official will begin gathering visual and physical evidence in order to prove a person’s state of inebriation. This evidence can lead to harsh penalties for the accused individual. This is why having the experienced representation of a Washington DUI attorney is so essential. 


At Callahan Law, P.S., Inc. we are very familiar with the evidence-gathering tactics of law enforcement officials and the common errors made by breath test machines. We use this knowledge to create successful DUI Defense Strategies for each client. 

With more than 30 years of experience to our name, we are the reputable law firm you want in your corner.

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We Challenge The Following Evidence On Every Case.


Probable Cause

Before you were asked to step out of your vehicle, the officer has been gathering evidence to support the arrest.


Field Sobriety Tests

As Ms. Callahan likes to call them “Bad Science”, FST’s are virtually impossible to pass, especially if the officer is the one grading you.


Breath Test - BAC

Factory trained, Linda M. Callahan understands the science behind breath testing most attorneys don’t.


Blood Test

With extensive training at Axion Labs in Chicago, Linda M. Callahan has the relevant experience to challenge Blood test evidence.

A DUI Defense Pioneer

Linda M. Callahan helped uncover breath testing issues at the toxicology lab in Washington State.  Resulting in thousands of breath test’s found invalid.

Let Us Be Your Legal Advocate

Contact one of our Experienced DUI Attorneys today and get the advice you need now.  Learn how to save your license and stay out of jail.

With Offices in Seattle, Olympia, and Shelton, we literally surround the Puget Sound.

81 S. Main St, Seattle, WA 98104

921 Lakeridge Way SW, Suite 102, Olympia WA 98502

1635 Olympic HWY N, Suite 101A, Shelton WA 98584

Copyright 2021 – 2025 |  Callahan Law, P.S., Inc.

Disclaimer: The legal information presented on this site should not be construed to be formal legal advice, nor the formation of a lawyer or attorney client relationship. Any results set forth herein are based upon the facts of that particular case and do not represent a promise or guarantee.  This web site is not intended to solicit clients for matters outside of the state of Washington.

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