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Tag Archives: breath tests

Cannabis Breath Testing for DUI Suspects

Unlike testing for alcohol, breath testing technology does not yet exist for cannabis. However, this type of technology is growing ever closer. The principal problem is that the technology must detect recent cannabis use and additionally prove that the cannabis in one’s system impaired the driving. The problem arises because cannabis may be detected in one’s body long after the effects of the drug have worn off. THC, the active ingredient in cannabis may remain on the breath for two ... Read More »

Blood, Breath and Birchfield v. North Dakota — Why it matters

On June 23, 2016, the U.S. Supreme Court published an important decision affecting our right of privacy.  Birchfield v. North Dakota[1] was presented to the highest court in the land due to the enactment of legislation in several states that penalize DUI  suspects who refuse to submit to a chemical test with not only drivers’ license suspension or revocation, but also criminal penalties. Such laws present the accused with an impossible choice—forgo the constitutional right to be free from warrantless ... Read More »

Do Breathalyzers Measure Alcohol?

Breathalyzers don’t actually measure alcohol. That’s right.  What they actually detect and measure is any chemical compound that contains the methyl group in its molecular structure.  There are thousands of such compounds — including quite a few which can be found on the human breath. And this machine that determines a person’s guilt or innocence in a DUI case will “see” all of those chemicals as alcohol — and report a falsely high blood-alcohol concentration (BAC). Most breath machines used ... Read More »