The Role of Science in DUI Defense: How We Challenge Evidence

DUI cases often rely heavily on scientific evidence, such as blood alcohol concentration (BAC) tests, breathalyzer readings, and field sobriety tests. While these tests are widely considered reliable by the courts, the reality is that many factors can compromise the accuracy of these results. At The McShane Firm, we specialize in challenging the scientific evidence presented by the prosecution.

For instance, breathalyzer devices must be carefully calibrated and maintained to ensure they provide accurate readings. If the device was not properly maintained or the officer administering the test was not properly trained, the results could be inaccurate. Similarly, blood tests can be contaminated if they are not handled correctly, and the timing of the test in relation to your driving can also skew the results.

Another common area where science plays a role is field sobriety tests. These tests are often subjective, relying on the officer’s interpretation of your balance and coordination. However, many factors, such as medical conditions, uneven terrain, or poor lighting, can affect your ability to perform these tests, leading to false conclusions.

At The McShane Firm, we use scientific experts to challenge the validity of these tests. Whether it’s showing that the breathalyzer wasn’t functioning correctly or that a blood test was mishandled, we use scientific analysis to expose flaws in the prosecution’s case. This approach has proven highly effective in reducing charges or having cases dismissed altogether.

By scrutinizing the scientific evidence, we can build a strong defense that questions the reliability of the prosecution’s case, giving you the best chance at a favorable outcome.

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PA DUI attorney Justin J. McShane is the President/CEO of The McShane Firm, LLC - Pennsylvania's top criminal law and DUI law firm. He is the highest rated DUI attorney in PA as rated by Avvo.com. Justin McShane is a double Board certified attorney. He is the first and so far the only Pennsylvania attorney to achieve American Bar Association recognized board certification in DUI defense from the National College for DUI Defense, Inc. He is also a Board Certified Criminal Trial Advocate by the National Board of Trial Advocacy, a Pennsylvania Supreme Court Approved Agency.