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<blockquote data-quote="HarryWarden" data-source="post: 5648073" data-attributes="member: 100171"><p>“Six experienced marijuana users smoked marijuana with different concentrations of THC, the drug’s psychoactive ingredient, in a sealed chamber. Six non-smokers were seated next to the smokers. In two sessions, the participants were in a room with no ventilation, while in the third session they were in a ventilated room. The non-smokers’ urine was tested 13 times over the next 34 hours. Urine levels of THC surpassed typically detectable levels in only one participant, four to six hours after exposure. When the researchers used a more sensitive test, which is usually not used in workplace drug testing, they could detect lower THC levels, but only for 24 hours.</p><p></p><p>Non-smokers in the ventilated room did not come close to meeting the threshold for a positive drug test, <a href="http://www.newsweek.com/could-second-hand-pot-smoke-make-you-fail-marijuana-test-278913" target="_blank">Newsweek</a> reports.”</p><p></p><p></p><p></p><p></p><p></p><p>[URL unfurl="true"]https://www.dominiondiagnostics.com/news/study-finds-positive-drug-test-secondhand-marijuana-smoke-unlikely[/URL]</p></blockquote><p></p>
[QUOTE="HarryWarden, post: 5648073, member: 100171"] “Six experienced marijuana users smoked marijuana with different concentrations of THC, the drug’s psychoactive ingredient, in a sealed chamber. Six non-smokers were seated next to the smokers. In two sessions, the participants were in a room with no ventilation, while in the third session they were in a ventilated room. The non-smokers’ urine was tested 13 times over the next 34 hours. Urine levels of THC surpassed typically detectable levels in only one participant, four to six hours after exposure. When the researchers used a more sensitive test, which is usually not used in workplace drug testing, they could detect lower THC levels, but only for 24 hours. Non-smokers in the ventilated room did not come close to meeting the threshold for a positive drug test, [URL='http://www.newsweek.com/could-second-hand-pot-smoke-make-you-fail-marijuana-test-278913']Newsweek[/URL] reports.” [URL unfurl="true"]https://www.dominiondiagnostics.com/news/study-finds-positive-drug-test-secondhand-marijuana-smoke-unlikely[/URL] [/QUOTE]
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