Plano DWI Attorney

Chemical Tests & DWI Defense in Plano, TX

When referring to a DWI (driving while intoxicated) case, a chemical test may be a breath test, blood test or urine test administered in order to determine the presence and amount of alcohol or controlled substances in a driver's system. The results of these tests often provide the foundation for the government's case against a driver who has been charged with drunk driving or driving under the influence of drugs. Though a failed breathalyzer test or blood test may make it seem as though there is no hope of avoiding a conviction, there are various ways that an attorney experienced with challenging DWI evidence can contest chemical test results to fight a client's charges.

A Plano DWI lawyer can thoroughly review the circumstances that led up to chemical testing and can also analyze the test itself, the device used to administer the test, the person that conducted the test and the test results. An independent analysis of a blood sample may reveal that the results were skewed or that the sample was mixed improperly with anticoagulants or preservatives. A review of the maintenance of a breathalyzer device may show that it was improperly calibrated. By conducting a complete investigation into every aspect of chemical tests, a competent attorney can locate even the smallest opportunity of weakening the prosecution's case against a defendant.

About DWI Tests

Breath tests and blood tests are most frequently administered in Plano DWI cases. Urine tests are typically only used in limited circumstances, either related to drugged driving arrests or cases where a breath or blood sample cannot be given for medical reasons.

With a complete understanding of how these tests operate and experience in the field of DWI defense, the team at the Zendeh Del Law Firm can provide you with the aggressive representation you need in the face of allegedly failed or refused chemical tests. Contact a Plano DWI Lawyer at the firm today to discuss your unique case and options.