THC- Blood Levels Can't be Determined after death.
The role of cannabis in vehicular crashes remains one of the most controversial aspects of legalization. A new study produced by a Colorado researcher threatens to upset one of the supposed scientific certainties about impairment and blood-THC levels.
Andrea Tully, a graduate student researcher at the University of Colorado, looked at the blood draw methods and THC level results from 100 recently deceased subjects at the El Paso County Coroner’s Office in Colorado Springs.
Each subject tested positive for THC, but when comparing blood drawn from different parts of the body, Tully found dramatic disparities in THC levels. She also found disparities in THC levels drawn soon after death, compared to blood drawn hours or days later from the same subject.
Her conclusions throw doubt on the growing pool of data in legal states on fatal vehicle crashes supposed caused by THC impairment. “Reaching a verdict on the level of impairment of a deceased individual,” Tully wrote, “can prove to be risky and possibly reckless,” due to the many uncontrolled variables she uncovered in postmortem blood draws.
This has the potential to be a politically explosive statement.
Source :BRUCE BARCOTT May 8, 2019
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