Hepatitis B surface antigen (HBsAg) antibody, total (serum/plasma)
This test measures your body’s immune response to hepatitis B virus infection by detecting antibodies against the virus. It helps determine if you’ve been exposed to hepatitis B or if your immune system is actively fighting it.
["Assesses past or current hepatitis B exposure through antibody presence."]
Key facts at a glance
- LOINC
- 54061-7
- Short code
- HEDIS 2009-11 PPC-C CMV
- Synonyms
- HEDIS 2009-11 PPC-C CMV
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Matters
HBsAg antibodies are produced when your immune system encounters hepatitis B. Unlike the surface antigen itself, these antibodies can remain in your blood long after infection has resolved, serving as markers of immunity or past exposure. This test is crucial for monitoring chronic hepatitis B carriers or evaluating vaccine effectiveness.
How the Test Works
Your blood sample is analyzed using an immunoassay method to detect total antibodies against hepatitis B virus components. The test identifies both IgG and IgM antibodies, which may indicate different stages of infection or immunity.
What to Expect Before the Test
No special preparation is needed. You may eat and drink normally on the day of your test. Wear comfortable clothing and plan to stay near the testing site for about 15 minutes while results are processed.
Possible Results and Their Meanings
Positive results suggest you have developed antibodies against hepatitis B, indicating either past infection, vaccination, or both. Negative results mean no detectable antibodies were found, which could mean you’ve never been exposed or the test was taken too early after exposure.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Total Anti-Hepatitis B Antibody
Frequently asked questions
What does a positive result mean?
Can this test detect acute hepatitis B?
Is this test the same as hepatitis B surface antigen (HBsAg) test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy