RT Book, Section A1 Friedman, Lawrence S. A2 Papadakis, Maxine A. A2 McPhee, Stephen J. A2 Rabow, Michael W. SR Print(0) ID 1166166985 T1 Chronic Viral Hepatitis T2 Current Medical Diagnosis and Treatment 2020 YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9781260455281 LK accessmedicine.mhmedical.com/content.aspx?aid=1166166985 RD 2022/05/21 AB ESSENTIALS OF DIAGNOSISDefined by chronic infection (HBV, HCV, HDV) for longer than 3–6 months.Diagnosis is usually made by antibody tests and viral nucleic acid in serum.