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 ...

A group of researchers has proposed clear, practical guidelines for safer cannabis use, similar to how alcohol consumption is ...

A urine test can detect THC for up to 30 days after use. THC is detectable in blood for the shortest time, up to 12 hours, but can stay longer in heavy users. Hair tests show THC use for the longest ...

By Priyanjana Pramanik, MSc. By translating cannabis use into standardized THC units, researchers uncover clear weekly ...

New research suggests measuring THC intake offers a clearer way to understand cannabis health risks than counting how often ...

How much cannabis is too much? A new study proposes a weekly THC limit linked to addiction risk, suggesting adults staying ...

State of Michigan officials recently chose not to set a per se level of THC in blood or saliva to constitute impairment when driving. As more results on the subject come in, it looks like the state ...

Many states in the U.S. have legalized cannabis either medically or recreationally, but without legalization at the federal level regulation is left to states, including testing for contaminants and ...