MMA Fighting reported that Sonnen, who fought in the middleweight and light-heavyweight divisions, tested positive for four banned substances in a test conducted by the Nevada State Athletic Commission on June 5.
It was the second random drug test that Sonnen had failed.
In June 5, it was revealed that he had failed a drug test conducted May 24, and he later announced his retirement from the sport.
According to the MMA Fighting report, Sonnen tested positive for human growth hormone, recombinant human erythropoietin, anastrozole, and human chorionic gonadotropin.
"Yes, the Commissioner is aware of other prescribed medications I was taking and I will not challenge their allegations," Sonnen told MMA Fighting. "I will cooperate with the Commission and look forward to having a dialogue about how fighters who transition off TRT can avoid violating any rules."
The UFC said they have been "made aware" that Sonnen failed another drug test.
"Our stance on the subject remains the same. We support the commission and will continue to ensure that all UFC competitors compete free of performance-enhancing drugs and banned substances," the UFC said in a statement.
source: www.abs-cbnnews.com
