Rony Jason tested positive for the diuretic hydrochlorothiazide following his first-round submission victory over Damon Jackson at UFC Fight Night 67 on May 30, but will appeal the result.
The Brazilian featherweight, who had the win overturned to a no-contest and was issued a nine-month suspension by the Brazilian MMA Athletic Commission (CABMMA), told MMAFighting.com he required the commission to test the B sample, and will sue the commission if proven innocent.
"CABMMA informed me that the sample B will be tested on July 7," Jason said. "My lawyer is going to Las Vegas to follow the entire procedure.