A hair strand drug test screens for illicit drug use and the misuse of prescription medication. Though commonly called a “hair follicle test,” this drug test only tests clipped strands of hair, not ...

Hair follicle drug tests involve removing a small hair sample for laboratory testing. Results can show if a person has been using certain drugs or prescription medications in the previous 3 months. It ...

As more states legalize marijuana and competition for talent grows fiercer, the U.S. government is loosening guidelines from the “Just Say No” era. By Ernesto Londoño Not long ago, urinating in a cup ...

Dr. Nora Volkow, who leads the National Institutes of Drug Abuse, would like the public to know things are getting better. Mostly. By Matt Richtel Historically speaking, it’s not a bad time to be the ...