Efter gentagne doser af ViraferonPeg (1, 0 mikrogram/ kg indgivet subkutant hver uge i fire uger) reduceres clearance af ViraferonPeg med gennemsnitlig 17% hos patienter med moderat nedsat nyrefunktion (creatinin clearance 30- 49 ml/ minut) og med gennemsnitlig 44% hos patienter med kraftigt nedsat nyrefunktion (creatinin clearance 15- 29 ml/ minut) sammenlignet med personer med normal nyrefunktion.
Following multiple dosing of ViraferonPeg (1.0 microgram/kg subcutaneously administered every week for four weeks) the clearance of ViraferonPeg is reduced by a mean of 17% in patients with moderate renal impairment (creatinine clearance 30-49 ml/minute) and by a mean of 44% in patients with severe renal impairment (creatinine clearance 15-29 ml/minute) compared to subjects with normal renal function.