Add Yahoo as a preferred source to see more of our stories on Google. NBC News hired a lab to test THC vaping pens from both legal distributors and counterfeit ones and found some alarming results.

When Missouri cannabis regulators recalled hundreds of marijuana vape pens last month, the Kansas City-based manufacturer ...

SAN DIEGO (KGTV) – A local marijuana testing lab is releasing vape test results that are alarming. Almost 80% of the cannabis vape cartridges were tested and deemed "unfit for consumption." Tucked ...

State officials in Michigan are encouraging medicinal cannabis retailers to have their vape cartridges tested for heavy metals after lead was detected in some products. In a public health and safety ...

LANSING, Mich. (WXYZ) — The Michigan Marijuana Regulator Agency issued an a recall of vape cartridges due to failing a test under new state rules for high levels of ...