Michigan safety Jabrill Peppers tested positive for a dilute sample at the combine, NFL Network Insider Ian Rapoport reported.
ESPN first reported the news.
"Peppers went to the combine. He was sick after flying there from San Diego. He has a history of cramping," a CAA spokesman told ESPN. "Peppers was being pumped with fluids, drinking 8-10 bottles of water before he went to bed, because he was the first guy to work out two days for the LBs and DBs. He had to go through that first day, come back on second day, and that was the fear.