Are you high? The science of testing for marijuana impairment still evolving

Published: Aug 25, 2017, 10:10 am • Updated: Aug 25, 2017, 10:57 am By David Migoya, The Denver Post There was a time when marijuana was illegal everywhere and testing for it was as easy as could be. It didn’t matter the level of cannabinoids found in a person’s body.…

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