Testing Drivers for Evidence of Marijuana Use is Difficult, Experts Say

It is very difficult to test whether a driver has been using marijuana. The reason is that the psychoactive ingredient in marijuana, THC, dissolves in fat, unlike alcohol, which dissolves in water, experts tell NPR.

“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.”

When a person drinks, alcohol spreads through the saliva and breath, and evenly saturates the lungs and blood, the article notes. That means measuring the volume of alcohol in one part of the body reliably indicates how much is in other parts, including the brain.

Full story of testing drivers for marijuana at drugfree.org

Levels of THC Incorrectly Labeled on Most Edible Marijuana Products: Study

Most edible marijuana products incorrectly list their levels of THC, the main psychoactive ingredient, a new study finds.

The study analyzed 75 edible marijuana products sold in Seattle, San Francisco and Los Angeles, according to The New York Times. Only 17 percent of the products correctly described their levels of THC. Researchers found 60 percent of the products had less THC than the packages stated, and 23 percent had more THC than advertised.

Full story of THC levels incorrectly labeled at drugfree.org

Marijuana “Dabbing” Causing Explosions and Severe Burns

Marijuana “dabbing,” a potentially dangerous way of using the drug, is increasingly popular, a new study finds.

According to the Drug Enforcement Administration (DEA), dabbing is a method used to convert marijuana into a concentrate. It uses butane, which is highly flammable, to extract THC from the cannabis plant. THC is the psychoactive chemical in marijuana. This process has resulted in violent explosions, the DEA noted.

“In this process, shredded or ground up plant material is stuffed into a glass, metal, or plastic pipe, with a filter on one end and then the butane is forced in the open end of the pipe,” the DEA explains in a brochure. “As the butane goes through the pipe, the THC within the plant material is extracted and forced through the filter, usually into a receptacle. The receptacle is then heated to burn off the remaining butane, creating a butane gas.”

Full story on marijuana dabbing at drugfree.org