Jones says he had no knowledge of taking performance-enhancing drugs.
The positive test was revealed after Jones took out Daniel Cormier in July at UFC 214, and reclaimed the 205 title. Jones subsequently was stripped of the title in September - the third time he's been stripped of the gold - but he's since denied any wrongdoing and apparently is going to great lengths to prove his innocence.
Almost two weeks ago, the Vice President of Athlete Health and Performance Jeff Novitzky told Joe Rogan that he did not believe Jones knowingly took the banned substance.
The fighter was asked to comment on Jones' polygraph test and had a pointed response.
Cormier will look to put another Jones scandal behind him when he fights Volkan Oezdemir at UFC 220 on Saturday.
He still hasn't been handed an official punishment by the CSAC or USADA.
He has been provisionally suspended by the UFC and is awaiting sanction from the California State Athletic Commission and USADA.
If Micoc wins the bout, he would set a UFC record for most heavyweight title defenses at three, which goes to show how explosive the power is in the division. He was suspended for one year after testing positive to two banned substances (letrozol and clomiphene) before UFC 200 - blaming the result on a sex pill.