The share represents results which show an Adverse Analytical Finding (AAF). The source adds the following information: "An AAF is a report from a WADA-accredited Laboratory or other WADA-approved Laboratory that, consistent with the International Standard for Laboratories (ISL) and related Technical Documents, identifies in a sample the presence of a Prohibited Substance or its metabolites or markers (including elevated quantities of endogenous substances) or evidence of the use of a Prohibited Method."
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Olympic doping tests which returned a positive result worldwide 2012-2021
Doping occurs when an athlete uses prohibited substances or methods to improve their results in training and competitions. This practice is forbidden for any athlete participating in a competition or sporting event, such as the Olympics, and anti-doping tests are regularly carried out. Of the over *** thousand samples analyzed in 2021, around **** percent of those taken for Olympic sports reported an Adverse Analytical Finding (AAF).
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World Anti-Doping Agency. (January 17, 2023). Share of Olympic sport doping tests which reported a prohibited substance worldwide from 2012 to 2021 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 20, 2026, from /statistics/1287397/share-olympic-doping-violations-worldwide/
World Anti-Doping Agency. "Share of Olympic sport doping tests which reported a prohibited substance worldwide from 2012 to 2021." Chart. January 17, 2023. ÌÇÐÄÆƽâ°æ. Accessed July 20, 2026. /statistics/1287397/share-olympic-doping-violations-worldwide/
World Anti-Doping Agency. (2023). Share of Olympic sport doping tests which reported a prohibited substance worldwide from 2012 to 2021. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 20, 2026. /statistics/1287397/share-olympic-doping-violations-worldwide/
World Anti-Doping Agency. "Share of Olympic Sport Doping Tests Which Reported a Prohibited Substance Worldwide from 2012 to 2021." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 17 Jan 2023, /statistics/1287397/share-olympic-doping-violations-worldwide/
World Anti-Doping Agency, Share of Olympic sport doping tests which reported a prohibited substance worldwide from 2012 to 2021 ÌÇÐÄÆƽâ°æ, /statistics/1287397/share-olympic-doping-violations-worldwide/ (last visited July 20, 2026)
Share of Olympic sport doping tests which reported a prohibited substance worldwide from 2012 to 2021 [Graph], World Anti-Doping Agency, January 17, 2023. [Online]. Available: /statistics/1287397/share-olympic-doping-violations-worldwide/
