What Are Breathalyzer Tests and How Do They Work in DUI Cases?
In South Carolina, breathalyzer tests are one of the primary tools used by law enforcement to determine whether a driver is impaired by alcohol. The device measures the amount of alcohol in your breath, which is then used to estimate your blood alcohol concentration (BAC). Police officers typically use breathalyzers during roadside DUI checkpoints or traffic stops.
While breathalyzers are widely used, they are not foolproof. The reliability of these devices depends on several factors, including the device’s maintenance and calibration, how the test is administered, and the conditions under which it is conducted. Inaccuracies in any of these areas can lead to false readings, which could significantly impact the outcome of your case.
Breathalyzer Flaws and How They Affect Results
One of the most critical aspects of a DUI defense is challenging the accuracy of the breathalyzer results. These devices, while commonly used, are prone to certain flaws that can lead to incorrect readings. Below are some of the most common issues:Calibration Issues
Breathalyzers require regular calibration to ensure they provide accurate results. If the device hasn’t been properly calibrated or hasn’t been calibrated in a timely manner, the results could be off. For example, a breathalyzer that hasn’t been calibrated correctly could give a false high reading, suggesting that you have a higher BAC than you actually do.Improper Administration of the Test
reathalyzer tests must be administered in a specific manner to ensure accuracy. For example, officers must make sure that you do not have any residual alcohol in your mouth before the test. If you’ve recently consumed alcohol or used mouthwash, the test could detect alcohol that was in your mouth rather than in your bloodstream, leading to an inaccurate result. The officer should also observe you for a specific period of time before the test to ensure that no foreign substances interfere with the result. If they fail to follow these protocols, it could create room for raising reasonable doubt in your case.Medical Conditions and External Factors
Certain medical conditions, such as acid reflux, can affect breathalyzer readings. If the contents of your stomach are regurgitated into your mouth, they can cause higher alcohol concentrations in your breath. Additionally, external factors like environmental conditions, including temperature, can sometimes interfere with the test results.Device Malfunctions
Like any machine, breathalyzers are susceptible to mechanical failure. If the device hasn’t been regularly maintained or inspected, it may produce incorrect results. If the device has been improperly serviced or is malfunctioning, it could provide unreliable data that could negatively impact your case.How Flaws in Breathalyzer Tests Can Help Your DUI Defense
The flaws mentioned above don’t just make breathalyzers less reliable—they can provide a solid foundation for raising reasonable doubt in your DUI case. If we can demonstrate that the breathalyzer test was flawed in any way, it could significantly undermine the prosecution’s case.Raising Reasonable Doubt with Calibration Records
If we can show that the breathalyzer used in your case was not properly calibrated or maintained, this opens the door to questioning the reliability of the test. If the prosecution cannot prove that the device was functioning correctly, it becomes more difficult for them to argue that your BAC was above the legal limit.Questioning the Administration of the Test
If the officer did not follow proper procedures when administering the test, we can challenge the validity of the results. For instance, if the officer didn’t observe you for the required period before conducting the test or failed to ensure there was no alcohol or mouthwash in your mouth, we can argue that the test results were tainted by improper procedures.Addressing Medical Conditions or External Factors
If you have a medical condition that could interfere with breathalyzer results, we can present this as evidence to challenge the accuracy of the reading. Conditions like acid reflux or environmental factors such as temperature could have skewed the test results, raising doubts about whether your BAC was truly over the legal limit.Related Videos
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