Thiago Silva’s UFC 125 Drug Test Results Indicate Non-Human Sample

March 29, 2011

Thiago Silva at UFC 108

Thiago Silva

The results are back in the case involving Thiago Silva and the mystery drug test from UFC 125. The conclusion is that the Brazilian submitted a sample inconsistent with human urine.

The Nevada State Athletic Commission released the results of the testing on Tuesday.

According to the report, Silva allegedly submitted a sample to the commission on Jan. 1 that was tested by Quest Diagnostics and came back as an invalid sample, inconsistent with human urine.

A second sample was then sent to Sports Medicine Research & Testing Laboratory, which is accredited by the World Anti-Doping Agency, for testing and came back with the same result – urine inconsistent with that of a human.

The allegation is that Silva submitted either an altered or substituted specimen for the sample used in the drug test.

Silva has been sidelined since the Jan. 1 bout in which he was victorious over Brandon Vera at UFC 125. He was set to return to action at UFC 130 in May, but was subsequently pulled from the card when red flags popped up over the drug test.

According to Keith Kizer, Executive Director of the Nevada State Athletic Commission, the penalty for the drug test on Silva could result in “revocation or suspension, and/or fine, and/or No Contest ruling” for the bout with Vera.

No penalty has been doled out at this point, but the commission has handled a similar case to this.

In 2007, former UFC heavyweight champion Kevin Randleman had a urine test come back with similar results. Randleman submitted a test that was found to have no human hormones, and as a result, he had his license to fight revoked by the commission. He was eligible to re-apply after one year.

The commission hasn’t decided on Silva’s punishment at this time, but it’s likely to end up in the same ball park. A hearing on a temporary suspension will be held on April 7. Silva also has the option to file an appeal for a formal hearing on the matter. will continue to update on the fallout from the testing situation and update with the punishment handed down for Silva when it becomes available.