Antonio Silva steroidsMixed martial arts heavyweight champion Antonio Silva pleads innocence to steroid use allegations. The allegations stemmed from the California State Athletic Commission’s release of Silva’s doping results on Thursday.

According to the CSAC, the fighter’s urinalysis showed traces of the anabolic steroid boldenone. The test was conducted during the Brazilian’s bout against Justine Eilers at the EliteXC card on July 26. As a result, Silva was immediately suspended for one year and fined $2,500.

Alex Davis, Silva’s manager, is planning to contest the disciplinary action and to request a hearing before NSAC.

“It’s a false positive. He got tested positive for something he didn’t take,” said Davis from his home outside Rio de Janeiro. “I will not let my fighter sit back and be wronged like this. I just won’t.”

In a statement, Silva also denied he committed any wrongdoing. “I did not use the steroid Boldenone, or any other steroid of prohibited substance. I don’t agree and never have agreed with the use of this kind of product in order to win, for this is cheating. I will go to the full extent of my power and the law to prove my innocence in this matter.”

Boldenone is an anabolic steroid approved for veterinary use only. Equipoise is one of the popular brand names of boldenone which is used mainly to treat conditions of horses, such as injury and diseases. This steroid also reportedly improves the well-being of horses as it increases protein synthesis.

According to, Silva has been denied licensure in the state of California in June 2007 because “an abnormal brain scan of the athlete showed signs of a tumor.” Silva reportedly suffers from the condition known as acromegaly, which causes enlargement of the extremities and face due to an overactive pituitary gland. The 6-foot-4 Brazilian underwent medical treatment two months later to surgically remove the tumor and fought three times since.