“There’s been no violation of the anti-doping program,” Novitzky said. “He’s been cleared to fight in terms of the USADA program. … USADA fully analyzed it internally. They reached out to outside experts from around the world. They reached out to another sports league that has seen the same issue. And all of them, independent of us, determined that this was not a reingestion of the substance and this very, very small amount that was occurring and still showing up, according to these expects from around the world, did not provide any performance-enhancing benefit.
“Not much is known about this longterm metabolite. The parent compound is not approved for human use anywhere in the world … but what both USADA and other entities are seeing is that a recurrence, or potential ‘pulsing,’ where you have multiple negative tests and then a positive one for a very low amount – they’re seeing that quite commonly over time. And no one knows how long this could last – it could potentially last forever (in Jones’ system).”
