Immunoglobulin preparations used in intravenous infusion, containing primarily immunoglobulin g. They are used to treat a variety of diseases associated with decreased or abnormal immunoglobulin levels including pediatric AIDS; primary hypergammaglobulinemia; SCID; cytomegalovirus infections in transplant recipients, LYMPHOCYTIC leukemia, CHRONIC; Kawasaki syndrome, infection in neonates, and IDIOPATHIC THROMBOCYTOPENIC purpura.