All 26 fighters who competed at the UFC 190 event in Rio de Janeiro, Brazil, on Aug. 1, were tested for steroids and drugs of abuse and passed the screenings, the Brazilian MMA Athletic Commission (CABMMA) announced Wednesday.

According to a statement released by CABMMA, "the athletes were subject to a comprehensive testing program that consisted of both blood and urine collections", with a U.S. Anti-Doping Agency (USADA) official present during the collection process, and samples were set to a WADA-accredited laboratory for analysis.

UFC 190 featured a bantamweight title fight between Ronda Rousey and Bethe Correia in the main event, and "Rowdy" defended the title with a 34-second knockout.

The UFC will return to Brazil on Nov. 7, with Vitor Belfort fighting Dan Henderson for a third time in a five-round middleweight clash at Sao Paulo’s Ibirapuera gymnasium.