The United States Anti-Doping Agency (USADA) announced yesterday that Fabricio Werdum was notified of a potential anti-doping infraction with respect to an out-of-competition sample collected on April 25, 2018.

Werdum responded on his Instagram account, calling the situation a “misunderstanding.”

Fala galera Fui pego de surpresa com a notícia de que um dos exames colhidos pela USADA em abril deu positivo para uma substância proibida. Me coloquei à disposição da USADA e do UFC e estou trabalhando com a minha equipe para entender o que aconteceu. Eu sempre fui muito cuidadoso com tudo o que eu tomo e sempre apoiei o esporte limpo. Vocês podem ter certeza de que vamos esclarecer esse mal entendido e espero em breve poder voltar a fazer o que eu amo, que é lutar. ➖➖➖➖➖➖➖➖➖➖➖➖ Hey guys, I got up this morning to the news that one of my urine samples from April tested positive for a prohibited substance. I am working with my team, the UFC and USADA to understand what happened. I’ve always been careful with everything I take and I’ve always supported a clean sport. We will work hard to solve this misunderstanding and I hope soon to be able to go back to the octagon and do what I love

A post shared by Fabricio Werdum 🥇 (@werdum) on

Meanwhile, the UFC posted a response on its website:

The UFC organization was notified today that the U.S. Anti-Doping Agency (USADA) has informed Fabricio Werdum of a potential Anti-Doping Policy violation stemming from an out-of-competition sample collected on April 25, 2018.

USADA, the independent administrator of the UFC Anti-Doping Policy, will handle the results management and appropriate adjudication of this case involving Werdum. Under the UFC Anti-Doping Policy, there is a full and fair legal process that is afforded to all athletes before any sanctions are imposed. Additional information will be provided at the appropriate time as the process moves forward.

The process continues.

@kenaiandrews