With Belfort Vs Weidman happening, fans wondered how would they fight in Vegas if Vitor is a known for being on TRT and TRT is prohibited on fights in Vegas unless the Nevada State Athletic Commission or NSAC allows it.

Vitor Belfort told Ariel Helwani in an interview that he is going to ask for a therapeutic use exemption for testosterone for his next fight, which is expected to be against middleweight champion Chris Weidman later this year in Las Vegas.

Vitor Belfort said he regarded the testosterone use as medication that he needs. A TUE for testosterone should and will only be granted if someone's natural production of testosterone is at well under normal levels, and thus not having enough testosterone in the body is a health concern. Taking testosterone, an anabolic steroid, is otherwise prohibited in most major sports. Using testosterone signals the body to not produce it on its own, and it would continually weaken the body's natural production of it. Thus, an athlete, or anyone being prescribed the drug, would be expected to have to use it for life.

Vitor Belfort failed a steroid test, for testosterone on October 21, 2006, before a fight in Las Vegas where he lost to Dan Henderson.

According to MMA Fighting, No fighter who has previously tested positive for steroids has been granted a TUE in Nevada.

Keith Kizer, the Executive Director of the Nevada State Athletic Commission had previously stated that he didn't believe an athlete who had failed a steroid test would be granted an exemption, noting he didn't believe in granting exemptions if their low natural production was based on prior steroid use, which is illegal in MMA.

Vitor Belfort hasn't fought in Las Vegas since Feb. 5, 2011 where he lost to Anderson Silva in a middleweight title fight. Vitor Belfort did not request a TUE for that fight. Since then he's gone 7-1, with the only loss coming on a short notice fight, moving up a weight division to challenge UFC light heavyweight champion Jon Jones.