The U.S. Department of Health and Human Services (HHS) is being urged by public transit groups to quickly build out a system that would allow the use of saliva tests for marijuana and other drugs—a method proponents say will be less intrusive than typical urine-based screenings and more indicative of recent consumption so that people … Continue reading Feds Urged To Certify Saliva Testing Labs To Reduce False Marijuana Positives In Urine Screenings