Diagnosis of Chronic Hepatitis Liver test results compatible with hepatitis Viral serologic tests Possibly autoantibodies, immunoglobulins, alpha-1 antitrypsin level, and other tests Occasionally biopsy Serum albumin, platelet count, and prothrombin time / international normalized ratio (PT / INR) (See also the practice guideline Hepatitis C Guidance 2019 Update: American Association for the Study of Liver Disease-Infectious Diseases Society of America Recommendations for Testing, Managing, and Treating Hepatitis C Virus Infection and the U S.Preventive Services Task Force's clinical guideline Hepatitis C Virus Infection in Adolescents and Adults: Screening.)