Across the United States, many employers include drug screening as an integral part of their hiring process. These employers believe that only a drug-free workplace can increase productivity and make ...

Arizona’s medical cannabis industry has long been a Wild West without mandatory testing, but a new state advisory council is about to settle in and bring some law and order. Officials at the state ...

For decades, police have used breathalyzers to test for alcohol, but they don’t have a reliable tool to measure marijuana use. That could change soon. Researchers are working to develop a breathalyzer ...

Beginning Tuesday, emergency rules are now in place to allow THC retailers to sell cannabis products to adults over the age of 21. This takes effect two weeks after Gov. Greg Abbott issued an ...

In a review of 246 deceased drivers, 41.9% tested positive for active THC in their blood, with an average level of 30.7 ng/mL — far exceeding most state impairment limits. The high rate of THC ...