Chael Sonnen UFC 167 Post_9376Chael Sonnen stepped into retirement earlier this month after testing positive for two prohibited substances and voluntarily admitting to a third following a random drug test administered on May 24 in Las Vegas.

On Saturday, it came to light that Sonnen tested positive again in blood and urine samples given at another random drug test administered on June 5 in Portland, Ore.

Both tests were administered at the behest of the Nevada Athletic Commission because Sonnen at the time had been scheduled to fight at UFC 175 on July 5 in Las Vegas. NAC chairman Francisco Aguilar confirmed the second drug test to MMAWeekly.com following an initial report by MMAFighting.com.

It’s not that surprising that Sonnen would test positive again less than two weeks after the first failed test. It is surprising, though, that two of the four substances he tested positive for on the Portland-administered drug test were different than those the first test showed.

The May 24 test showed that Sonnen tested positive for Anastrozole and Clomifene, both of which can be utilized to help treat men with hypogonadism, which Sonnen claims to have. He also voluntarily admitted to taking Human Chorionic Gonadotropin (hCG).

What he didn’t voluntarily admit to, and what didn’t show up on the May 24 test results, were human growth hormone (hGH) and recombinant human erythropoietin (EPO). Both are performance-enhancing substances that are prohibited by the World Anti-Doping Agency, which is the standard the NAC follows.

More commonly known for its use in professional cycling by the likes of Lance Armstrong and numerous others, EPO stimulates red blood cell production in the body, which increases the amount of oxygen that blood can carry to muscles. This stimulation increases endurance and recovery.

“hGH is known to act on many aspects of cellular metabolism and is also necessary for skeletal growth in humans,” according to WADA’s description of the substance. “The major role of hGH in body growth is to stimulate the liver and other tissues to secrete insulin-like growth factor (IGF-1). IGF-1 stimulates production of cartilage cells, resulting in bone growth and also plays a key role in muscle and organ growth.”

As with the first failed drug test in Las Vegas, Sonnen appears to be saying that he was prescribed medications that also caused the second failed test in Portland.

“Yes, the Commission is aware of other prescribed medications I was taking and I will not challenge their allegations,” he told MMAFighting on Saturday. “I will cooperate with the Commission and look forward to having a dialogue about how fighters who transition off TRT can avoid violating any rules.”

In the wake of the first failed test, Sonnen announced his retirement from mixed martial arts and the NAC temporarily suspended him pending a full disciplinary hearing at the commission’s next meeting, which is slated for July 23 in Las Vegas.

Follow MMAWeekly.com on FacebookTwitter and Instagram.

view original article >>

Report here if this news is invalid.

Related News

USADA confirms Yoel Romero tested positive for prohibited substance

  • 3 days ago
  • 34 views

UFC anti-doping partner USADA today confirmed Yoel Romero tested positive for a prohibited substance in the wake of the UFC middleweight’s admission to failing a test.Filed under: News, UFC read news >>

Konstantin Erokhin positive for steroids following December's TUF 22 Finale

  • a day ago
  • 10 views

Drug test results from a trio of December events in Las Vegas are back, and one former UFC fighter came up positive for banned substances.Filed under: News, UFC read news >>

Former UFC Champ Benson Henderson to Challenge for Bellator Belt in First Fight

  • 9 days ago
  • 39 views

MMAWeekly.com has confirmed that Benson Henderson will challenge for the Bellator welterweight title in his first fight for the promotion. read news >>

Tim Means Pulled from UFC Fight Night 83 After Failed Drug Test

  • 8 days ago
  • 19 views

Welterweight Tim Means has been pulled from the UFC Fight Night 83 main event against Donald "Cowboy" Cerrone after failing an out-of-competition drug test. read news >>

Conor McGregor Tweets Picture from Random Drug Test Ahead of UFC 197 Title Fight

  • 17 days ago
  • 99 views

UFC featherweight champion Conor McGregor has been drug tested for the first time this year, he revealed on Twitter on Monday. The Irishman posted the following image from his home in Dublin, in whic read news >>

UFC's Sage Northcutt stays positive despite negativity, sarcasm on social media (Yahoo Sports)

  • 15 days ago
  • 5 views

From Yahoo Sports: The rising star responds to the criticism by acting like a salesman shamelessly pitching whatever product he happens to be hawking. read news >>

UFC's Sage Northcutt stays positive despite negativity, sarcasm on social media (Yahoo Sports)

  • 15 days ago
  • 5 views

From Yahoo Sports: The rising star responds to the criticism by acting like a salesman shamelessly pitching whatever product he happens to be hawking. read news >>

Jose Aldo Issues Conor McGregor-or-Title Ultimatum to UFC and Dana White

  • 15 days ago
  • 1531 views

MMA legend Jose Aldo has confirmed he will not fight in the UFC again unless he’s handed a rematch against Conor McGregor or a title shot. The Brazilian, regarded as one of the sport’s greatest compe read news >>

Chael Sonnen Beyond the Fight: Heavyweight Breakdown and UFC on FOX 18

  • 15 days ago
  • 19 views

In this week's episode of Beyond the Fight, Chael Sonnen discusses the breakdown of the UFC Heavyweight Championship and weighs in on UFC on FOX 18. read news >>

Chael Sonnen joins Laila Ali, Vince Neil, Snooki on 'Celebrity Apprentice'

  • 14 days ago
  • 5 views

Chael Sonnen is heading from the cage and broadcast booth to the reality-TV boardroom.Filed under: News, UFC read news >>