Breathalyzer Test Analysis

While most individuals are aware that breathalyzer tests serve to help measure the concentration of alcohol in the bloodstream, many people do not know how the machines actually detect or record alcohol when breath is exhaled. For individuals who have been apprehended on suspicion of driving while intoxicated, it is important to be familiar with the types of tests that may be administered by law enforcement officials, and how the tests may be challenged in court.

DWI charges can have a significant impact on a person’s finances and livelihood, so it is important to have an experienced attorney on your side to help defend your rights. If you or someone you love has been charged with driving under the influence of alcohol or drugs, contact Dallas DWI attorney Mark T. Lassiter at (214) 845-7007 to discuss your legal options.

Factors Affecting Breathalyzer Results

While different breathalyzer machines may function differently, the tests typically rely on:

  • Measuring the exchange rate or evaporation rate of alcohol in the body
  • Determining the fixed ratio of alcohol concentration on the breath
  • Converting the ratio of breath alcohol to concentration of blood alcohol
  • Measuring the breath alcohol concentration using fuel-gas sensors set to detect alcohol molecules

The test analysis typically depends on the amount of breath exhaled, presence of other gases in the system, presence of alcohol molecules in the mouth, and other factors.

Contact Us

For assistance with your DWI case, contact Dallas DWI lawyer Mark T. Lassiter at (214) 845-7007 today.


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