"What you can't have are guys abusing this to the point where their levels are at some super-human factor, giving them this performance enhancement," said UFC co-owner Lorenzo Fertitta on ESPNRadio1100's "The MMA Insiders" show.
"There's got to be more random testing. It seems like, possibly, guys are getting outside the boundary while they're training and managing it down where once the week of the fight [has arrived], they take the test and they're fine. I think that there needs to be this random testing to make sure no one's abusing it."
"I think we came off with a pretty strong response to Nate Marquardt, and kind how we feel about TRT. Our stance is we're working with commissions to say 'look this whole thing has got to come to an end.' If you are going to have some kind of therapy, not only can you not be at the top end of the range, you can't be anywhere near performance enhancing."
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