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& Barnett, P

This section will explore the origins of tobacco and its spread around the world, shedding light on how this plant has shaped and been shaped by human history

One important element is how users consume puffs

legal and safety guidance including the nicotine warning

To reach THC concentrations of 50 pg/mg (cut-off recommended by the Society of Hair Testing 21 ) through incorporation via the bloodstream would require consumption of extremely high amounts of THC, which would certainly be associated with a several-fold higher amount of THC incorporated through contamination routes (cannabis smoke exposition and/or transfer by contaminated fingers)