After a positive drug test, UFC lightweight Bobby Green expressed regret, "It's my responsibility.
Green claimed he accepted a call from the UFC alerting him he had tested positive for a prohibited substance when he was in training camp for the scheduled July 2 fight against fellow veteran fighter Jim Miller.
Green claimed that he thought the dehydroepiandrosterone (DHEA) supplement he was carrying was the cause of the negative by-products.
The UFC's anti-doping policy, which is overseen by the U.S. Anti-Doping Agency (USADA), lists DHEA as a prohibited substance under the anabolic category.
Green made the "adverse analytical finding" public before USADA, which allowed the agency to confirm it in a statement to ESPN.
Anti-doping policy breaches are often not announced by USADA until after its adjudication procedure is complete.
USADA made no comments regarding the drug discovered or any sanctions.