If you have ever wondered you can trust breathalyzer tests, you are not alone. These devices play a crucial role in DUI enforcement, but their accuracy is not as black-and-white as you might think.
How do breathalyzers work?
Breathalyzer devices estimate your blood alcohol concentration (BAC) by checking the alcohol in your breath. When you blow into the device, it measures the alcohol in your breath and turns that reading into an estimated BAC level.
However, this is just an estimate. The device assumes everyone has the same relationship between breath alcohol and blood alcohol, but this can be different for each person. Things like your body temperature, how you breathe and even how your body processes alcohol can affect the results.
What can go wrong with breathalyzer results?
Some factors may affect the accuracy of breathalyzer tests. Calibration issues are common. If the device lacks proper maintenance or was not set up correctly, it may give wrong readings.
Your recent activities matter too. Using mouthwash, breath spray or certain medications with alcohol can make your BAC reading higher than it should be. Even acid reflux or heartburn can cause stomach alcohol to come up into your mouth, leading to falsely high results.
Outside factors also play a role. Signals from police radios or cell phones can sometimes mess with electronic breathalyzer devices. Temperature and humidity can change readings as well.
The officer giving the test must follow proper steps. If they do not watch you for the required waiting period before testing or fail to follow standard procedures, the results may be wrong.
Should you trust the results?
Breathalyzers can provide useful estimates, but they are not perfect. If you have received a breathalyzer test result that does not match how much you drank, you might want to consider asking for a blood test, which is usually more accurate.
You could also look into whether the device was properly set up and maintained. Maintenance records and setup logs can show possible problems with the specific device used in your case.
Remember that questioning breathalyzer accuracy often requires technical knowledge and skill. Understanding your rights and the science behind these tests can help you make informed decisions about your situation and whether the results might be wrong.