Quick answer: Blood tests are attacked at every link in the chain: the legality of the draw or warrant, the qualifications of the person drawing, tube storage and preservation, chain of custody, and the lab’s analysis and records. Blood evidence looks scientific — until you audit how it was handled.
Blood cases feel unwinnable to clients. They aren’t. This video walks through the blood-test defense playbook: warrant defects, unqualified phlebotomy, expired or mishandled tubes that let blood ferment (creating alcohol in the vial), gaps in chain of custody, and lab discovery that reveals sloppy science.
Texas labs process enormous volumes, and the records don’t lie. When the handling breaks down, the number becomes unreliable — and unreliable evidence can be excluded or discredited at trial.
Related reading: How do you fight a DWI Blood test?-Video
Contact Stephen T. Bowling, DWI & Criminal Defense Attorneys for a free consultation — we answer these questions about your specific case, at no cost and no obligation.
