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Is a breath test for marijuana nothing but a pipe dream?

Submitted by Marijuana News on Thu, 07/16/2015 - 08:45

Difficulties in testing for THC mean that curbing cannabis use amongst drivers hasn't been all that straightforward. Though marijuana use can be detected in the saliva for up to 24 hours after use, it can show up in blood and urine samples for anywhere up to a month. Existing methods like blood and urine samples therefore make it hard to determine whether a driver is actually impaired at the time that they jump behind the wheel. But companies like Canada's Cannabix are working on portable breathalyzers designed to test exclusively for recent use of the drug, a solution that could be of great assistance to law enforcement personnel in keeping impaired drivers off the road.

The spark may have been lit for a marijuana breath test in 2007, when a roadside survey carried out by the US National Highway Traffic Safety Administration found 8.7 percent of people driving at night...

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URL: 
http://www.gizmag.com/breath-test-marijuana/38456/

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