THC Blood And Urine Tests Don’t Give Accurate Indication Of Impairment


A new study funded by the US National Institute of Justice (NIJ) has concluded that the level of tetrahydrocannabinol (THC) in a person’s blood, urine or saliva can’t be used to gauge their level of intoxication[i]. These findings raise some pretty big questions about the validity of roadside THC tests currently utilised by some police forces, suggesting that some drivers may be inaccurately deemed to be impaired while at the wheel. Related Post Top Tips For Safer Cannabis Use THC Tests Go Under The Microscope With recreational and medical cannabis legal in numerous countries and states around the world, the need to establish safe driving guidelines has rightly received a great deal of attention over recent years. Naturally, it’s critically important that no one drive while stoned or impaired in any way by weed, yet establishing a legal threshold for intoxication has proved to be tricky. In certain locations, law enforcement relies on “per se” regulations that consider drivers to be over the limit if their bodily fluids are found to contain more than a certain concentration of THC. To analyse the suitability of such laws, the study authors recruited 20 people to take part in six dosing sessions over six weeks, during which participants ate weed brownies containing zero, ten and 25 milligrams of THC, and inhaled vapour consisting of zero, five and 20 milligrams of THC. On each session day, the researchers collected blood, urine and oral fluids from each participant every hour for eight hours after consumption, while also conducting a range of tests in order to assess levels of cognitive and psychomotor function impairment. “Results from the toxicology tests showed that the levels of all three targeted cannabis components (THC, cannabidiol, and cannabinol) in blood, urine, and oral fluid did not correlate with cognitive or psychomotor…

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Source : THC Blood And Urine Tests Don’t Give Accurate Indication Of Impairment

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