Anderson Silva has finally responded to the news of his failed drug tests.

The longtime middleweight champion and pound-for-pound entrant, who was revealed to have failed “out-of-competition” drug testing yesterday, issued a statement to MMA Junkie today through his co-manager Jorge Guimares.

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 drug test.

I have not taken any performance-enhancing drugs. My stances on drug is, and will always be, the same. I am an advocate for a clean sport.

I’m consulting with my advisors right now to explore all my options and intend to fight this allegation and clear my name. I will not make any further comments until my team advises me to do so.

Silva tested positive for drostanolone and androsterone in tests conducted at the behest of the Nevada Athletic Commission on January 9. Both substances are banned both in and out of competition. Silva competed this past Saturday in Las Vegas at UFC 183, defeating Nick Diaz by unanimous decision. Test results were not revealed until yesterday.

According to Dr. Daniel Eichner, the director of the lab who conducted the tests, the lengthy wait for results is unavoidable due to a “vast and extensive screening process.”

“Would we like to get the reports out before an event? Of course,” Eichner said to Yahoo! Sports. “Of course we would. But think of the Olympic movement: You strip people of gold medals. You don’t stop them from racing. Sometimes these things take longer and then you have to go back and sanction after the fact.”