Quick Answer
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
- HBsAg positive means you have an active hepatitis B infection.
- Anti-HBs positive shows immunity from vaccination or past infection.
- Anti-HBc positive indicates past or current infection, not vaccine.
- Window period for HBsAg is about 4-12 weeks after exposure.
- Hepatitis B serology does not test for hepatitis A or C.
- Testing is done at clinics, labs, or with at-home blood kits.
The Short Version, Structured
Hepatitis B is a liver infection caused by the hepatitis B virus (HBV), transmitted through blood or sexual contact. It is distinct from hepatitis A (fecal-oral) and hepatitis C (also blood-borne). Lab results for hepatitis B use serology to detect specific antigens and antibodies your immune system produces. Understanding these markers helps determine if you have an active infection, are immune, or need vaccination. This guide focuses only on hepatitis B testing, not hepatitis A or C serology.
Frequently Asked Questions
How to interpret hepatitis b serology?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
How to interpret hepatitis b titer results?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
How to interpret hepatitis serology?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
How to read hepatitis b titer results?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
How to understand hepatitis b serology?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
What is hepatitis b serology?
Hepatitis B lab results are interpreted by looking at three key markers: HBsAg (surface antigen), anti-HBs (surface antibody), and anti-HBc (core antibody). A positive HBsAg means active infection, while positive anti-HBs indicates immunity from vaccination or recovery. Anti-HBc positive suggests past or current infection, not from vaccine.
Related Questions
Sources & Further Reading
- CDC — Sexually Transmitted Infections
- CDC STI Treatment Guidelines
- WHO — Sexually transmitted infections fact sheet
- MedlinePlus — Sexually Transmitted Diseases
Figures reflect CDC surveillance and WHO estimates; they are population statistics, not personal risk predictions.