'THC exposure does not equate to impairment. The link in literature, it's just not there.'
Thomas MitchellSince THC can affect everyone differently, detecting pot impairment isn't as simple as using a breathalyzer, blood test or urine sample.Using a breathalyzer alone to effectively detect cannabis impairment could be a pipe dream, according to a recent pilot study spearheaded by the University of Colorado.
"We are not there yet in terms of reliable tools, so I think making false claims or selling products that aren't reliable is not a good situation," she explains. "We have this image of how well a breathalyzer works for alcohol, but you have to let people miss and let places like CU Boulder do the work. We don't have a for-profit force in this game. We actually want to do the science and understand the science.
Colorado state law currently considers any driver intoxicated who has more than 5 nanograms of THC in their blood. However, studies and evenhave shown that THC levels in the blood remain high for regular users over twelve hours after consumption, while THC blood levels in novice users spike immediately after smoking but can drop below 5 nanograms within hours.
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