Four months later, Vitor Belfort has decided to fire back at Chris Weidman.

Days before the middleweight title fight between Weidman and Belfort in May, a report by ESPN revealed that both fighters passed a pre-UFC 187 random drug test, but the Brazilian’s testosterone levels were higher than Weidman’s.

According to the report, Weidman had a 3.7 ng/ml testosterone level, while Belfort had a 12 ng/ml testosterone level two weeks before. At the official weigh-ins on May 22, Weidman snapped.

"I left him alone with this whole drug-test thing," Weidman said after making weight. "But then we just found out during camp he had a 1200 testosterone score. I'm 10 years younger than him and he's got a way higher testosterone level. This guy is still cheating. I'm gonna make him pay for it tomorrow night."

Belfort, who was fighting for the first time without the testosterone replacement therapy (TRT), told the media in Sao Paulo on Tuesday, while promoting his trilogy bout with Dan Henderson in Brazil for Nov. 7, that media and fans should pay attention to Weidman’s levels instead of focusing on his test results.

"Did he stop cycling? Wasn’t him the one to stop cycling, because his testosterone was low?" Belfort said in Sao Paulo. "I was doing a treatment and paid the price. But have you ever thought about it, or no? Nobody ever talked about it. My levels were normal, his levels were low. How a kid at his age has low testosterone?"

Belfort claims every fighter was using banned substances while he was on TRT.

"The reality is everybody was doing cycling, with their testosterones," he said. "I didn’t hide anything. You all knew what I was doing, I was doing a treatment. And I still have the deficiency, I’m working with supplements and food. I have a life of sacrifice. I don’t have a normal social life. I won’t reveal my secret, and my doctor’s secret, but we have been using natural things to meet this demand."

"The Phenom" returns to the Octagon in a five-round 185-pound clash with Dan Henderson at UFC Fight Night 77, and revealed to Lancenet he was drug tested by the U.S. Anti-Doping Agency (USADA) in Las Vegas on Sept. 4.

Update: Weidman has responded to the report on Twitter.