TABLE 4.

Pegasys RBV^* (pegylated interferon alpha-2a) and COPEGUS^† (ribavirin) doses

Genotype	Pegasys dose weekly		Ribavirin dose daily
1 or 4	180 μg		Weight <75 kg = 1000 mg/day
			Weight ≥75 kg = 1200 mg/day
2 or 3	180 μg		800 mg (regardless of weight)
Pegetron* (pegylated interferon-alpha-2b) and ribavirin doses
Weight (kg)	Pegetron RediPen* or vial strength to use	Amount of Pegetron to administer weekly (μg)	Volume of Pegetron to administer weekly (mL)	Ribavirin dose to administer daily (mg)
<40	50 μg/0.5 mL	50	0.5	800
40–<50	80 μg/0.5 mL	64	0.4	800
50–<64	80 μg/0.5 mL	80	0.5	800
64–<75	120 μg/0.5 mL	96	0.4	1000
75–<85	120 μg/0.5 mL	120	0.5	1000
≥85	150 μg/0.5 mL	150	0.5	1200

^*Hoffmann-La Roche Ltd, Canada;

^†Hoffmann-La Roche Inc, USA

^*Schering-Plough Canada Inc