Beware of Cannabis Blows 2017

respirator     Washington State University (WSU) researchers say they are about a year away from having a portable breath test that police can use to detect if someone has recently consumed weed and is driving under the influence.
Roadside breath tests already exist to detect whether drivers have consumed alcohol. But currently, officers have no similar device to test drivers for marijuana use. WSU researchers have completed their first round of testing of the marijuana breathalyzer and are making improvements.      The second round of testing is about to begin and the plan is to make the device available for police to use in the field sometime next year.
While police would still need to get a warrant and draw a person’s blood to see if they meet the legal definition of impairment under the state’s marijuana laws, a breath test could be a more reliable way to detect marijuana impairment than field sobriety tests that officers use now.
Initiative 502, which voters approved in 2012 to legalize recreational marijuana use, said drivers are considered impaired if they test positive for at least 5 nanograms of delta-9 THC per milliliter of blood. The marijuana breath test under development at WSU is designed to test for delta-9 THC, the psychoactive component of marijuana that causes someone to get high- not the metabolite that can stay in someone’s system for days or weeks. Right now, the test determines only whether delta-9 TCH is present in someone’s system, and not what level is in their blood.
Out of 30 times the test was recently used on someone before and after they smoked marijuana, it accurately detected TCH in the person’s system about half of the time. The test turned up only one false positive during the trials. Researchers are continuing to refine the breath test and will only improve on those results. The research team had already made changes that will help make the test more accurate going forward.

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