Belgian rider Bjorn Leukemans faces a two-year ban after his B sample tested positive for the male sex hormone testosterone.
"The result of my B sample has also returned positive," the Predictor-Lotto rider said on his personal Web site on Wednesday (www.bjornleukemans.be).
Leukemans, 30, was suspended by the Belgian team when it was revealed last month that he had tested positive for testosterone a few days before the world championships in Stuttgart, Germany.
"Though we have not received a confirmation for his B sample, the rider remains suspended until he is heard by the Belgian authorities," Predictor-Lotto said in a statement.
Leukemans, who finished the world championships road race in 13th position last September, denied any wrongdoing. "I am innocent," he said on his Web site.
Leukemans has been summoned to a hearing by the Flemish cycling federation discipline committee on Jan 1O.
His best result this season was fourth place in the Paris-Roubaix classic.