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Challenging a Field Sobriety Test

During routine DWI stops, law enforcement officers typically utilize a number of sobriety tests to determine a driver’s impairment due to intoxication. Some of these tests may include breathalyzer tests, walk-and-turn tests, one-leg stands, horizontal gaze tests, and blood alcohol content tests.

Although these types of tests are frequently relied upon by law enforcement, this does not guarantee their accuracy. In the event that a sobriety test’s accuracy is questionable, it is possible to challenge these results with the help of an attorney.

Lawyer for Challenging Field Sobriety Tests in Plano, Texas

Being charged with a DWI can be extremely stressful, especially when you believe that there was some error on behalf of law enforcement officials. Fighting these charges will require the knowledge of an experienced defense attorney prepared to do the work necessary to ensure your rights.

If you or someone you know was charged with a DWI in Plano, Allen, Dallas, Richardson, Carrollton, or Dallas, Texas, contact Law Offices of Richard C. McConathy at (972) 805-8855 for a free, no-obligation consultation to discuss your charges.

With offices in both Plano and Allen, Texas, Law Offices of Richard C. McConathy also accepts clients residing in Rockwall County, Denton County, Grayson County, Fannin County, and Collin County.

Issues with Field Sobriety Tests

One of the most commonly used field sobriety test is the Intoxilyzer which measures a driver’s blood alcohol content. While this test is a chemical test which should yield more accurate results than more subjective tests, there are still issues with these tests.

A large part of obtaining an accurate blood alcohol content level reading is when the test is administered. It is possible that a driver may have had a different blood alcohol level at the time he or she was stopped than when the test was administered some hours later.

Also, lab workers may account for some human error. Improper testing may result in an inaccurate reading due to higher blood alcohol content in a person’s blood serum than in his or her body. Results may also be tampered due to lab contamination and failure to store the samples properly.

Equipment failure may also result in inaccurate readings. If an Intoxilyzer is improperly calibrated, this can result in an inaccurate reading as well.

All of the aforementioned factors may result in a driver being improperly charged with driving under the influence. If you believe the results of your sobriety test were faulty, seeking an attorney is in your best interest.

Additional Resources  

Municipal Court- Visit the Municipal Court website of the Plano Texas Government for more information on court fines, fees, and court scheduling. This website provides information on court locations, dismissals, and hearings. Also, find operation hours and gain access to the online record search.    

Find an Attorney for Challenging Field Sobriety Tests in Plano, Texas

Challenging a field sobriety test is extremely complicated even for the most experienced criminal defense attorneys; however, at Law Offices of Richard C. McConathy, our attorneys are prepared to fight on your behalf towards the best outcome. Operating out of Plano and Allen, our firm also accepts clients from Carrollton, Frisco, Dallas, and Richardson.

If you are facing DWI charges due to a sobriety test which may be questionable, call Law Offices of Richard C. McConathy at (972) 805-8855 today for your free consultation. This firm also accepts clients in Collin County and surrounding counties including Rockwall County, Grayson County, Fannin County, and Denton County.

This article was last updated on December 27, 2016.


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5700 Granite Pkwy #200
Plano, TX 75024

405 SH 121 Bypass #A250
Lewisville, TX 75067

Principal location
15110 Dallas Pkwy #400
Dallas, TX 75248


Office: (972) 805-8855

Fax: (972) 239-0398