UFC fighter Li Jingliang tested positive for the substance in a May 18 out-of-competition drug test, according to a UFC release Tuesday. USADA, though, will not be provisionally suspending him, because it is still investigating the cause of the positive test. In Jingliang's native China, meat is commonly contaminated with clenbuterol, per a WADA warning issued in 2011.
"USADA also informed the UFC that it initiated an investigation into the source of the prohibited substance detected in Jingliang's sample prior to notifying him of the potential violation," the UFC statement read. "Because of this investigation, USADA has not issued a provisional suspension against Jingliang at this time.