Case Results

Can breathalyzer or blood test results be challenged in court?

Answer:

Breath and blood results can be challenged by examining observation procedures, machine calibration and maintenance, laboratory methods, chain of custody, and the legality of the collection.

Breath and blood results can be challenged by examining observation procedures, machine calibration and maintenance, laboratory methods, chain of custody, and the legality of the collection.

A DWI defense should examine the traffic stop, officer observations, field-test procedures, breath or blood collection, laboratory work, and driver’s-license deadlines. Test results are not beyond challenge when procedures or evidence are unreliable.

For guidance tailored to your situation, speak with our Galveston DWI lawyers.