The U.S. Anti-Doping Agency (USADA) is the national anti-doping organization (NADO) in the United States for Olympic, Paralympic, Pan American, and Parapan American sport. The organization is charged with managing the anti-doping program, including in-competition and out-of-competition testing, results management processes, drug reference resources, and athlete education for all United States Olympic & Paralympic Committee (USOPC) recognized sport national governing bodies, their athletes, and events. Additionally, USADA contributes to the advancement of clean sport through scientific research and education and outreach initiatives focused on awareness and prevention.