A late-night stop can become frightening when an officer shows a breath-test number. That reading may seem final, yet it does not tell the full story.
If you are facing a driving under the influence (DUI) charge, you can examine how police obtained the result. Learning where errors might occur may reveal grounds to question its accuracy or admissibility. Several parts of the testing process could support such a dispute. Here are ways to challenge Breathalyzer results in a Georgia DUI case.
Review the observation period
Video may show whether the officer followed the recommended 20-minute deprivation period before the test. During that time, the officer generally checks that you do not eat, drink, vomit or place anything in your mouth. A departure from this procedure could raise questions about the reading’s reliability.
Examine the machine and operator records
In Georgia, testing rules require an approved method, working equipment and an operator with a valid permit. Calibration records and operator permits can reveal compliance gaps. The state also requires two sequential samples when the state selects breath testing. If the results differ by over 0.020, the prosecution generally cannot present either reading as part of its initial case.
Identify medical or timing factors
Acid reflux or regurgitation may leave your mouth with alcohol and distort a sample. Medical records and timing details could give an expert useful context.
Check the warnings and independent-test request
An inaccurate implied-consent warning may raise questions about whether you voluntarily agreed to the test. The effect often depends on the officer’s wording and the surrounding circumstances.
After taking the state’s chemical test, you may request another chemical test from a qualified professional of your choice. Police must reasonably accommodate a clear request while you remain in custody. An unjustified failure to do so could make the state’s result inadmissible.
Seek suppression when the collection was unlawful
If police obtained the sample unlawfully, you may ask the court to suppress the result. A written motion generally must state facts supporting the alleged violation. The state then bears the burden of proving the search and seizure were lawful.
What prosecutors may not explain about breath tests
Prosecutors may present a breath reading as objective science. What they may not emphasize is that the device measures alcohol in your breath rather than directly testing your blood. Testing conditions and some biological factors may affect the reliability of that measurement.
A result above 0.08% may support a DUI charge, but you can still question whether the device produced an accurate result that the prosecution can use in court. Nonetheless, you may question whether the device produced an accurate reading.
A roadside device also differs from the evidential instrument used after an arrest. Its result often supports the investigation rather than proving a precise alcohol level at trial.
Why early review can shape your defense
Breath evidence is technical, but small details may carry weight. Video, test slips and service logs can show how police conducted the test.
Prompt legal guidance can help you obtain those materials and evaluate possible grounds before court deadlines pass. An attorney may also assess whether a flaw affects admissibility or reliability.