ROME -- AC Milan's Marco Borriello tested positive for banned substances and has been suspended, his team and UEFA said Friday.
The Italian Olympic Committee found prednisolone and prednisone, which are corticosteroids, in a urine sample given by the forward after the team's 2-1 home defeat by AS Roma on Nov. 11.
If a second sample proves positive, Borriello could face a ban.
In a statement on the team's Web site, coach Carlo Ancellotti said the club was investigating the incident, adding there was "the certainty on the part of the team that the product, which turned up in the analysis, isn't used by Milan."
The 24-year-old Borriello has played in seven Serie A games this season and three times in the Champions League.