Dennis Siver has tested positive for hCG following his victory over Manny Gamburyan at UFC 168 on Dec. 28 in Las Vegas.
The Nevada State Athletic Commission confirmed Siver's positive test to MMAWeekly.com, which was first reported by ESPN.com on Saturday.
HCG is human chorionic gonadotropin, a hormone produced during pregnancy, according to the Mayo Clinic. As a prescription medication, HCG is used mainly to treat fertility issues. It has also been used to treat anabolic steroid induced hypogonadism, as it can stimulate testosterone production, according to the National Institute of Health.
Suspicion of Siver’s drug test first came to light in early March when UFC Tonight reported that the A sample for Siver, as well as that of Siyar Bahadurzada, produced inconclusive results. They’re B samples were then tested.
Siver’s B sample produced the positive result for hCG.
If Siver does not appeal or does not win an appeal, he is likely to face a fine and suspension, as well as having his victory over Gamburyan changed to a no-contest result.