The UFC announced yesterday that Silva tested positive for anabolic steroids in an out-of-competition drug test conducted last January 9.
Last weekend, Silva made a successful and emotional return to the UFC, defeating Nick Diaz via unanimous decision in his first fight since December 2013.
"I've been competing in this sport for a very long time. This is my 19th fight in the UFC. I have been thoroughly tested many times, and have never had a positive test," Silva said in a statement, as reported by ESPN.com.
"I have not taken any performance enhancing drugs," Silva stressed. "My stance on drugs is and will always be the same. I'm an advocate for a clean sport."
Silva said he is consulting with his advisors on what step to take as he seeks to "fight this allegation and clear my name."
Diaz, for his part, also failed a post-fight drug test after he was found with marijuana metabolites in his system.
Silva tested positive for Drostanolone and Androstane, both of which are banned substances.
Meanwhile, Silva's doctor, Dr. Marcio Tannure, said the Brazilian legend was disappointed and upset, "because he didn't use steroids."
"He will ask for the confirmation test because he believes the only explanation is a contamination or a mistake from the lab," Tannure said, as quoted by MMA Fighting. "He told me: 'I have an impeccable career history and I wouldn't want to tarnish my image.'"
Both Silva and Diaz are expected to be meted suspensions and fines by the Nevada State Athletic Commission.
source: www.abs-cbnnews.com
