Vitor Belfort has been tested three times in the lead-up to his fight with Dan Henderson. (Getty Images)

The numbers are as indisputable as they are shocking.

Ronda Rousey, the UFC's women's bantamweight champion and one of the crusaders for more sophisticated testing for performance enhancing drugs in mixed martial arts, has been tested seven times since the UFC and the United States Anti-Doping Agency began their program in July.

That is more than any other fighter. As of Oct. 28, the last reporting date, 146 tests were done on 84 athletes.

Vitor Belfort, perhaps the face of PEDs in MMA, has been tested just three times in the lead-up to his Nov. 7 fight against Dan Henderson. The results are available here.

To be fair, part of the discrepancy is because Rousey is in the midst of her second training camp for a title fight since July 1, while Saturday's fight will be Belfort's first in that timeframe.

But still.

If there is anyone who should know the USADA collectors on a first-name basis, it's Belfort.

It's fair to say that if there wasn't such an outcry about Belfort's controversial use of the since-banned testosterone replacement therapy (TRT), and his past positive tests for elevated testosterone in 2014 and for 4-hydroxytestosterone in 2006, UFC management wouldn't have seen the need to spend millions of dollars a year to have USADA test its athletes.

Belfort faces Henderson, a longtime rival, on Saturday in Sao Paolo, Brazil, in the main event of a UFC Fight Night card that will be broadcast live on Fox Sports 1.

Henderson, who has never had a positive test, has submitted to five tests by USADA, or two more than Belfort.

Henderson was a TRT user, as well, until it was banned, first by the Nevada Athletic Commission and then by most other jurisdictions. But the 45-year-old Henderson, who is the oldest active fighter in the UFC, never had the physical body transformation that Belfort had.

Belfort's TRT usage and allegations of PED usage have been among the most prominent news stories in the sport over the last five to seven years.

More than a year after Nevada banned TRT, Belfort was granted a middleweight title shot against champion Chris Weidman on May 23 in the main event of UFC 187.

But the normally low-key Weidman nearly attacked Belfort at the May 22 weigh-in because he learned that the 38-year-old Belfort's testosterone levels were significantly higher than his. Weidman is only 30.

In September, Deadspin reported the UFC permitted Belfort to compete in a 2012 title fight against then-light heavyweight champion Jon Jones despite being aware that Belfort's testosterone levels were elevated out of the normal range.

Last month, veteran reporter Ariel Helwani booked Belfort on his popular show, "The MMA Hour." But when Belfort's wife/manager, Joana Prado, asked for assurances that her husband wouldn't be asked about the Deadspin report, the appearance was canceled.

That led middleweight contender Luke Rockhold to lash out at Belfort once again.

"There's everybody else and then there's Vitor," Rockhold said on a recent episode of Bloody Elbow's "Three Amigos" podcast. "It's a matter of how much he's cheating, not if. There's a lot of guys that cheat, and then there's Vitor. It's just another level. He's just on everything you could possibly imagine, and it's been that way since he was 19 years old."

Powerful stuff.

View photos Chris Weidman, right, and Vitor Belfort trade blows during their bout at UFC 187. (AP) More

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