Examples from the Web for thc
A more precise association of THC levels and degrees of impairment are not yet available.
Basically any quality of weed will do, since the extraction of THC is the point and not the flavor or loftiness of effect.
A 1975 article in the New England Journal of Medicine concluded that THC is an effective anti-nausea therapy.
When the liver metabolizes delta-9 THC to 11-hydroxy THC, users feel the “combined effect of the two.”Smoke vs. Snack: Why Edible Marijuana Is Stronger Than Smoking|Steven Wishnia|June 13, 2014|DAILY BEAST
In other words, researchers were able to prove that THC should, technically, impair driving, but not that it does.