-- Texas Criminal Defense Group has expanded its legal services dedicated to challenging DWI blood draw evidence across the state, addressing a critical gap for defendants whose cases depend on the admissibility and reliability of blood test results. Texas residents facing DWI charges now have access to attorneys trained to scrutinize every aspect of blood collection, storage, and testing procedures, helping the firm to identify procedural defects and technical failures that may undermine prosecution cases.
More information is available at https://texascriminaldefensegroup.com/can-a-dwi-blood-test-be-wrong-accuracy-common-errors/
Systemic vulnerabilities in blood evidence handling demonstrate why these challenges are far from theoretical. In Houston, 70% of DWI blood tests are successfully challenged in court, with 45% of successful challenges stem from improper storage temperatures and 35% from chain of custody issues. A 2025 report by Stateline highlighted that forensic crime labs nationwide face mounting backlogs, raising concerns about contamination, storage integrity, and overall reliability of blood samples.
As a result, blood test results in Texas DWI cases are not automatically accepted by courts. Judges must evaluate whether samples were lawfully obtained and whether testing procedures met reliability standards under the Texas Code of Criminal Procedure art. 38.35. This regulatory framework creates opportunities for defense attorneys to challenge evidence that fails to meet statutory requirements, making specialized legal expertise necessary for defendants whose freedom depends on contesting blood draw validity, explains Texas Criminal Defense Group.
Multiple technical and procedural requirements govern blood sample validity, providing ample chances for a legal challenge. Blood must be drawn by a qualified professional—such as a physician, qualified technician, chemist, registered nurse, or licensed professional nurse. Reliability can be compromised by human error, contamination, equipment malfunction, fermentation within the vial, delays in testing, and improper preservatives. Any deviation from proper use can render test results unreliable, representing a potential point of failure that skilled defense counsel can exploit to exclude evidence or cast doubt on its accuracy.
Attorneys with Texas Criminal Defense Group have extensive experience investigating blood collection, storage, handling, and testing for procedural errors, chain-of-custody breaks, improper storage conditions, and test reliability issues. The firm applies specialized knowledge to identify defects that may escape the notice of generalist DWI defense practitioners, thereby improving outcomes for their clients. Individuals charged with DWI involving blood draws are encouraged to contact Texas Criminal Defense Group for a consultation, as early investigation and preservation of evidence are critical to mounting effective challenges.
For more information, visit https://texascriminaldefensegroup.com/
Contact Info:
Name: Stephen Hamilton
Email: Send Email
Organization: Texas Criminal Defense Group
Address: 1001 Texas Ave., Lubbock, Texas 79401, United States
Website: https://texascriminaldefensegroup.com/
Release ID: 89189169