Chael Sonnen Failed Second Random Drug Test, Two Substances Differ from First Failed Test

June 29, 2014
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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 following an initial report by

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.

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  • Mark McDowall

    Let’s see Dana and the UFC talk their way out of this one!!

    • Anonymous

      Why does UFC have to talk there way out of this? He’s already retired remember!

  • MMAreality

    I wasn’t a Chael fan at first. Then I started to like him. But now I have respect for a cheater.

    • MMAreality

      *no respect

  • Daily

    Never had any respect to lose for this sheister/con man/felon, so there is no further respect I can lose for him. All that talking was nothing more than to psych himself up because he knew there was nothing behind him. All those years of steroid abuse, hgh, and whatever else, has now destroyed his bodies endocrine system. Serves him right. The cheater and liar got what was coming to him.

    • put me in the sauna coach

      tell us how you feel

  • Lt. Dangle

    We should just stop talking about him already. He’s retired, his rep is tarnished, his “almost” win against Anderson means nothing now because he’s a cheater and that’s that.

  • Seth

    There is something called “Benefit of the doubt” that all Chael “haters” gave Wandarlei, when he ran off, afraid of testing positive for his PEDs. Now, you are ready to burn Sonnen at the stake right away. Interesting.

    Im not defending him now, since he was clearly tested for PEDs. Nothing to argue here – like last time – BUT he still holds a right to explain himself. So before you crucify him in the middle of the city as an example, let him go to NSAC and let him explain himself.

    • Raphael Mastro

      Technically he’s not a cheater if he was allowed to take them for the Silva fight.

      • drkdisciple

        Cant recall many giving Wanderlei any “Benefit of the doubt”!

        • Raphael Mastro

          I didn’t bc im not stupid either. If it was me and i really had a problem with my english i would of stayed and told them i want my lawyer present so that i can understand exactly whats going on before i take that test. Dana even said that, so you don’t run bc then you look guilty…which he was lol I don’t hate the guy but it is what it is. He used poor judgement.

      • manadon23 .

        Your not allowed to take hgh. Ever.

        • drweek

          about 2 months ago you were allowed in MMA and forever before that as well.

          • manadon23 .

            Hgh? Hgh isn’t allowed in any sport.

          • The milkman

            Hgh isn’t allowed for recreational use either. It’s illegal

          • MuayThaiFood

            You have no idea what you are talking about.

        • MuayThaiFood

          Or EPO

    • Darin

      Who are all these imagined Silva defenders you speak of? I don’t recall anyone excusing his running away. “Burn Sonnen at the stake right away”? “Crucify him in the middle of the city”…….? He’s failed TWICE now for FOUR different substances. Stop being such a drama queen and recognize that Sonnen is a phony that has always required chemical assistance to compete. His mouth has always been his strongest attribute.

      • Seth

        “Im not defending him now, since he was clearly tested for PEDs.”

        Read what I write at least.

        And go back to articles about Wandumb running from test and read some of the comments. People were defending him and bashing chael to take attention of Wandumb.

  • truthbtold

    S–t talking hypocrite

  • TheCerealKiller

    He’s retired. I don’t care if he tests positive for crack.


    wiedmann is doing the same guarantee that comes out in the wash sooner than later.

    • El Gvapo

      I fear if every fighter that was taking something they shouldn’t got caught today, we’d have very thin rosters tomorrow.



  • MuayThaiFood

    He was prescribed EPO…..that’s just laughable. If it’s true, and I seriously doubt it, then I want to go to this doctor of his and see if he’ll write me a prescription for massage therapy with happy endings.