Hepatitis B is confirmed through blood tests that detect specific antigens and antibodies. According to provided information, the presence of the total anti-HBc antigen is needed to diagnose a patient with a hepatitis B infection.
Here's a breakdown of how different tests contribute to confirming the diagnosis and determining the stage of infection:
- HBsAg (Hepatitis B surface antigen): A positive result indicates that the person is currently infected with hepatitis B.
- Anti-HBs (Hepatitis B surface antibody): A positive result usually indicates immunity to hepatitis B, either from vaccination or past infection.
- IgM anti-HBc (IgM antibody to hepatitis B core antigen): A positive result indicates a recent or acute hepatitis B infection.
| Test | Positive Result Indication |
|---|---|
| HBsAg | Current Hepatitis B Infection |
| Anti-HBs | Immunity to Hepatitis B (Vaccination or Past Infection) |
| IgM anti-HBc | Recent or Acute Hepatitis B Infection |
