Anti-doping in sports refers to the efforts made to prevent the use of performance-enhancing drugs and other banned substances or methods by athletes. These efforts are aimed at protecting the integrity of sports and ensuring fair competition for all athletes. The World Anti-Doping Agency (WADA) is a foundation initiated by the International Olympic Committee to promote, coordinate, and monitor the fight against drugs in sports. WADA develops, harmonizes, and coordinates anti-doping rules and policies across all sports and countries. The key activities of WADA include scientific and social science research, education, intelligence and investigations, development of anti-doping capacity, and monitoring of compliance with the World Anti-Doping Program. The World Anti-Doping Code is the core document that harmonizes anti-doping policies, rules, and regulations within sport organizations and among public authorities around the world. The code aims to protect the rights of clean athletes worldwide and ensure that anti-doping policies, rules, and regulations are consistent across all sports and countries. Athletes and athlete support personnel are provided with information needed to successfully participate in the anti-doping program governing their sport through the Clean Sport Handbook. Testing and adjudication of anti-doping rule violations are carried out by organizations such as USADA for athletes who are members or license holders of a recognized sport National Governing Body or are participating in an event or competition sanctioned by the USOPC or a USOPC-recognized sport.