Fighter Marc-André Barriault revealed on Wednesday that he had failed a doping test the night of his most recent fight against Oskar Piechota on June 20 in Las Vegas.

Informed by the Nevada Athletic Commission last week, he believes that the extremely low ostarine level, 190 picograms, or 190 parts per million millions, found in his urine comes from supplements absorbed before the fight.

“It is found in small doses as a contaminant in some supplements, levels that obviously offer no performance benefit. I am 100% convinced that contamination from one of my supplements is the reason for this positive test at an extremely low level, ”he argues in a press release published on Wednesday noon.

By extension, he writes that he did not “intentionally” use ostarine or use a prohibited substance during his career. “Since the beginning of my career, I have been tested three times by the Alcohol, Racing and Gaming Authority, and seven times by the UFC program of the USADA anti-doping agency, and I still have had negative results. "

He now intends to have certain supplements used during his training camp tested to determine which product is at fault. He also plans to work with the Nevada Athletic Commission to "get back to the octagon as quickly as possible." "

The 30-year-old Barriault joined the UFC last year. After three losses by decision with the organization, he won his first victory against Piechota. He is due to negotiate a new contract with the UFC this summer.