Some sports leagues default to the World Anti-Doping Agency standard for cannabis metabolite drug testing thresholds, while other professional sports leagues set their own standards. The MLB has a THC metabolite threshold of 50 ng/mL, the NFL has a threshold of 35 ng/mL, and the NBA has a threshold of just 15 ng/mL.
The Professional Golfers’ Association (PGA) increased its THC metabolite threshold ten fold in 2017, raising the limit from 15 ng/mL to 150 ng/mL. To put things into perspective, Olympic athletes are also held to the standard of 150 ng/mL. The increase in the PGA’s testing threshold is not as good as removing the prohibition on cannabis use altogether, but it’s a welcomed step in the right direction.