Testing Drivers for Evidence of Marijuana Use is Difficult

Sunday, March 13, 2016

“It’s really difficult to document drugged driving in a relevant way, [because of] the simple fact that THC is fat soluble,” said Margaret Haney, a neurobiologist at Columbia University. “That makes it absorbed in a very different way and much more difficult to relate behavior to, say, [blood] levels of THC or develop a breathalyzer.”