Is it possible to successfully challenge breathalyzer results in court?

Is it possible to successfully challenge breathalyzer results in court?

Some defendants have been able to challenge the results of such tests in court successfully, thereby preventing a conviction. An attorney experienced in drunk driving defense law is in a strong position to advise a client whether the “Breathalyzer” test results may be subject to challenge in his or her particular case.

How do you beat a breathalyzer in court?

You can beat a breathalyzer by hyperventilating, exercising, or holding your breath before you blow. Fact: An often-cited decades-old study found that hyperventilation and vigorous exercise did indeed lower subjects’ BAC readings by as much as 10%.

Why are breathalyzers not admissible in court?

Although the results of the test carried out on a portable breathalyzer are not admissible in court, prosecutors often have the officer testify that they gave a defendant a portable breath test and then arrested them. This statement can, therefore, prove harmful to the defendant in a DWI case.

What causes false breathalyzer results?

Acetone. Acetone in the breath is one cause of false blood alcohol concentration (BAC) results from breathalyzers. Hypoglycemia is a significant cause of acetone in the breath. And diabetics can have levels of acetone in the breath high enough to get false readings of .

Can I pass a breathalyzer After 8 hours?

Generally, a breathalyzer test can test positive for alcohol for up to 12 hours after consuming one alcoholic drink. The average urine test can also detect alcohol 12-48 hours later.

What is a bad breathalyzer score?

08 – . 10 blood alcohol level is considered legally drunk. * Most states practice zero-tolerance laws, meaning if you are under 21 any alcohol in your system is against the law.

How accurate are breathalyzers?

Modern breathalyzers are fairly accurate. However, they aren’t perfect, and not following proper procedures when using a breathalyzer can lead to significant error. All breath-test devices have an inherent margin of error. With many devices, the results can be off by as much as .

Are breathalyzers admissible?

Yes. In general, all Breathalyzers and breath test units used by law enforcement in California can be admitted as evidence in court. However, not all devices are treated equally.