( received the following report regarding Thiago Silva (15-2) from Nevada State Athletic Commission (NSAC) Executive Director Keith Kizer on Tuesday.

This is a reprint of the email exactly as it was received.

Complaint filed today. Here are the factual allegations:

4. On January 1, 2011, [Thiago] SILVA participated in a mixed martial arts contest in Las Vegas, Nevada, which he won by unanimous decision (the “Contest”). The Contest was conducted under the direction of the Commission.

5. Immediately before the Contest, on the same date, SILVA voluntarily submitted to urinalysis (the “Urinalysis”) and submitted a specimen for testing.

6. SILVA signed the Forensic Drug Testing Custody and Control Form, wherein he certified as follows: “I certify that I provided my specimen to the collector; that I have not adulterated it in any manner; each specimen bottle used was sealed with a tamper-evident seal in my presence; and that the information and numbers provided on this form and on the label affixed to each specimen bottle is correct.”

7. The Urinalysis reflects a Complete-Invalid Result indicating that the specimen submitted by SILVA is inconsistent with human urine. The results of the Urinalysis are reflected in the Toxicology Report, attached hereto as Exhibit 1.

8. The specimen submitted by SIVLA was also tested by the Sports Medicine Research & Testing Laboratory, which is accredited by the World Anti-Doping Agency.

9. The Test Report from the Sports Medicine Research & Testing Laboratory reflects that the specimen submitted by SILVA is inconsistent with human urine. The Test Report is attached hereto as Exhibit 2.

10. SILVA submitted an adulterated and/or substituted specimen for testing for the Urinalysis.


On Feb. 10, we ran a report stating that Silva’s first UFC 125 drug test came back positive and the NSAC was waiting on the second test. The report above, which was received today, is indicative of those second test results and states that “the specimen submitted by SILVA is inconsistent with human urine.

On first look, one might think that someone using non-human urine possibly substituted animal urine. More likely though, it would suggest the use of one of the synthetic urine products that are on the market. Of course, this is only speculative.

What happens now

Thiago Silva now has 20 days to file an answer to the complaint and there will be a hearing regarding his temporary suspension which will take place April 7.

For the UFC, this means one of their top-10 ranked light heavyweights in the world is put on the bench indefinitely, and it also calls into question, not only his win over Brandon Vera at UFC 125, but everything else he has accomplished.

Vera, who was originally cut by the UFC following his loss to Silva, was brought back once the news was revealed that Silva had failed his drug test.

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