UFC fighter Michel Prazeres has accepted a two-year USADA sanction

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UFC fighter Michel Prazeres has accepted a two-year USADA sanction

Colorado Springs, Colo. (February 11 2020) – USADA announced today that Michel Prazeres of Belém, Brazil, has accepted a two-year sanction for a violation of the UFC Anti-Doping Policy after testing positive for a prohibited substance. 

Prazeres, 38, tested positive for exogenous boldenone and its metabolite 5β-androst-1-en-17β-ol-3-one as the result of two out-of-competition urine samples he provided on March 9, 2019. Confirmation of the positive test was achieved through additional analysis using the sensitive isotope ratio mass spectrometry (GC/C/IRMS) method, which reported laboratory results consistent with the exogenous origin of boldenone. Boldenone is a non-Specified Substance in the class of Anabolic Agents and is prohibited at all times under the UFC Anti-Doping Policy and UFC Prohibited List.

Prazeres’ two-year period of ineligibility began on March 9, 2019, the date his positive samples were collected.


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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.

UFC fighter Michel Prazeres has accepted a two-year USADA sanction