USADA recently announced some major changes to their drug testing policies with the UFC, with one of the biggest changes coming on how they handle results due to tainted supplements.
UFC’s Hunter Campbell explained that a lot of these changes started from Jon Jones’ controversial “pulsing effect,” where trace amounts of the anabolic steroid he was previously suspended for was still showing up on his drug tests.
“Jon Jones was a moment where we all sat down and said, ‘We need to take a look at what the science is, as it pertains to the prohibited list,’” Campbell told ESPN.