Banned substances and their incidence: A retrospective view of the national laboratory of prevention and doping control of Mexico.

The use of banned substances to increase athletes' performance has been a scourge in international sport. In this sense, the World Anti-Doping Agency (WADA-AMA) has implemented a series of standards that harmonize the fight against doping. In particular, accredited WADA-AMA laboratories play an important role in the eradication of sports doping. This report shows the data obtained in the National Laboratory of Prevention and Control of Doping (LNPCD-CONADE) according to the incidence of Adverse Analytical Findings (AAF) in the 2009-2015 interval, which were obtained from the analysis of a total of 18,085 biological doping-control samples. The distribution of samples was analyzed as a function of gender, type of sport either in competition or out of competition, as well as the prevalence of AAF during the period of time analyzed and the relation regarding group of doping substance and type of sport. The data presented here were compared with those reported worldwide by the WADA-AMA and it was observed that in the cases of substances of the S1 group, the percentage reported by the LNPCD-CONADE is higher than the one reported worldwide. The opposite was observed for AAF presented by some substance from Groups S6 and S8. Likewise, a higher prevalence in the use of doping substances by male athletes (75%) is observed compared to that observed in female athletes (25%). The sports with the highest number of AAF detected in the laboratory were baseball, cycling, and athletics.