Michel Prazeres’ Career in Jeopardy Following 4-Year Ban for Performance Enhancing Drugs

Michel Prazeres Accepts Sanction for Second Violation of UFC Anti-Doping Policy https://t.co/gWqyGG6EtI

— USADA (@usantidoping) December 23, 2021

Ultimate Fighting Championship welterweight Michel Prazeres has waived the white flag on a four-year suspension for a second violation of UFC Anti-Doping Policy.

Prazere, 40, tested positive for multiple prohibited substances -- clomiphene and its metabolites (desethyl-clomiphene, clomiphene M1, and clomiphene M2), oxandrolone metabolites, and the exogenous administration of testosterone and/or its precursors via urine samples -- and will be banned from competition until Aug. 27, 2025. Prazeres previously tested positive for boldenone in March of 2019 and served a two-year ban.

The United States Anti-Doping Agency on Thursday revealed the suspension and issued the following statement:

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.