Although a female MMA fighter that takes place in light heavyweight or above is quite the rarity in the sport, it has taken place twice recently with Gabi Garcia winning both of them. The two wins by the Brazilian standout have led to UFC personality Joe Rogan accuse gabi Garcia of using male hormone, which is a similar claim he made about current Invicta FC Featherweight Champion Cristiane Justino, better known as Cyborg. Garcia has yet to fail any drug tests for her two MMA bouts or for the countless Brazilian Jiu-Jitsu bouts, so what Rogan said is mere conjecture at this point.
You can’t fail, when you’re not tested.