Three weeks after the World Anti-Doping Agency (WADA) raised the testing threshold for marijuana metabolites from 15 nanograms per milliliter to 150 ng/ml, the UFC announced that it would follow suit. The new rule will go into effect for all UFC regulated international events, including events held in Brazil. The announcement came during last Friday’s meeting of the Nevada State Athletic Commission's Steroid and Drug Testing Advisory Panel, which took place in Las Vegas. “When we self-regulate around…