Petacchi was not the only rider identified as giving a non-negative doping test during the Giro. Reports emerged in June that three riders were under suspicion of doping, later identified as Petacchi, Leonardo Piepoli, and Iban Mayo. Petacchi and Piepoli both gave tests showing elevated levels of salbutamol, while Mayo's had abnormally high testosterone levels. Mayo was quickly cleared, as further testing revealed that his testosterone levels were of natural origin and that his team had informed the UCI of this. Though Piepoli's level of salbutamol was, at 1,800 nanograms per milliliter, even higher than Petacchi's, he was cleared by his national federation of any doping charges in August.