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Prazeres, 40, tested positive for clomiphene and its metabolites (desethyl-clomiphene, clomiphene M1, and clomiphene M2), oxandrolone metabolites, and the exogenous administration of testosterone and/or its precursors as the result of urine samples collected out-of-competition on August 27, 2021, September 16, 2021, October 15, 2021, and November 2, 2021.

Prazeres’ urine sample was analyzed using a specialized test, known as Carbon Isotope Ratio (CIR) testing, that differentiates between anabolic androgenic steroids (AAS) naturally produced by the body and prohibited anabolic agents of external origin. The CIR test confirmed the presence of testosterone and/or its precursors of external origin in Prazeres’ urine sample. Anabolic agents have powerful performance-enhancing capabilities and can give an athlete an unfair advantage over fellow competitors.

Clomiphene is a Specified Substance in the category of Hormone and Metabolic Modulators, while all AAS and oxandrolone are non-Specified Substances in the class of Anabolic Agents. Clomiphene, oxandrolone, and all AAS are prohibited at all times under the UFC Anti-Doping Policy and UFC Prohibited List.

Prazeres’ four-year period of ineligibility began on August 27, 2021, the date his first positive urine sample was collected.

USADA conducts the year-round, independent anti-doping program for all UFC athletes. USADA is an independent, non-profit, non-governmental agency whose sole mission is to preserve the integrity of competition, inspire true sport, and protect the rights of clean athletes. In an effort to aid UFC athletes, as well as their support team members, in understanding the rules applicable to them, USADA provides comprehensive instruction on the UFC Anti-Doping Program website (https://UFC.USADA.org) regarding the testing process and prohibited substances, how to obtain permission to use a necessary medication, and the risks and dangers of taking supplements, as well as performance-enhancing and recreational drugs.

In addition, the agency manages a drug reference hotline, Drug Reference Online (https://UFC.GlobalDRO.com), conducts educational sessions, and proactively distributes a multitude of educational materials, such as the Prohibited List, easy-reference wallet cards, and periodic athlete alerts. Many of the resources available to athletes are provided in multiple languages, including Russian, Spanish, French, Portuguese, Korean, and Japanese.

USADA makes available a number of ways to report the abuse of performance-enhancing drugs in sport in an effort to protect clean athletes and promote clean competition. Any tip can be reported using the USADA Play Clean Tip Center, by text at 87232 (“USADA”), by email at playclean@USADA.org, by phone at 1-877-Play Clean (1-877-752-9253), or by mail.

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