UFC flyweight Isabela de Padua has accepted a two-year USADA sanction for a prohibited substance. De Padua (5-2 MMA, 0-1 UFC) was flagged for 19-norandrosterone (19-NA), defined as “the main urinary metabolite of nandrolone (19-nortestosterone) and other 19-norsteroids” on two separate occasions: once in-competition on Nov. 16 and once out-of-competition on Dec. 19. USADA announced the news in a press release Thursday. The release provided additional information about 19-NA: In accordance with standard practice, the exogenous, or non-natural, origin of the 19-NA was further confirmed by sophisticated carbon isotope-ratio mass spectrometry (GC/C/IRMS) analysis, which can reveal the presence of anabolic agents