You searched for peginterferon alfa-2a Did you mean? Peginterferon Beta-1a Interferon Beta-1b Interferon Gamma-1b 1 results PEGINTERFERON ALFA-2ABody system: Antineoplastic And Immunomodulating Agents Injection peginterferon alfa-2a 180 microgram/0.5 mL injection, 4 x 0.5 mL syringes peginterferon alfa-2a 135 microgram/0.5 mL injection, 4 x 0.5 mL syringes