How should researchers measure cannabis variables? From individual doses to big-picture trends, Canadian researchers are starting to work towards consensus on quantifying cannabis By: Solomon Israel When Canadian researchers define new empirical measurements for cannabis, they’ll be walking into a complex intersection of botany, chemistry and psychopharmacology. (Steven Senne / The Associated Press files) A sample of cannabis at a testing laboratory in Santa Ana, Calif. (Chris Carlson / The Associated Press files) In this Wednesday, Aug. 22, 2018, photo, a marijuana sample is set aside for evaluation at Cannalysis, a cannabis testing laboratory, in Santa Ana, Calif. Nearly 20 percent of the marijuana and marijuana products tested in California for potency and purity have failed, according to state data provided to The Associated Press. (AP Photo/Chris Carlson) Researchers have long quantified marijuana’s primary intoxicating molecule in terms of milligrams, but there’s no scientific consensus on how many milligrams of THC count as a standard dose for the purposes of clinical research. (Jae C. Hong / The Associated Press files)

2018-11-30