Test library
Quantitative Hepatitis B Immunity Test
A blood test that measures the quantity of hepatitis B surface antibody, commonly used to confirm whether vaccination has produced protective immunity.
Order Hepatitis B Surface Antibody, Quantitative
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Hepatitis B Surface Antibody, Quantitative- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
This test measures the exact amount of hepatitis B surface antibody in a blood sample. It is often used after a vaccination series to confirm that the immune system responded. A healthcare provider interprets the level along with other hepatitis B markers and the clinical situation.
What this test measures
The hepatitis B surface antibody, or anti-HBs, is the marker associated with protection against the virus. A quantitative result reports the concentration in standardized units rather than simply positive or negative. This detail helps clinicians follow immunity over time, including after vaccination or a booster discussion.
Only a serum sample from a routine blood draw is required. The laboratory reports the anti-HBs concentration, and additional markers such as HBsAg, anti-HBc total, and anti-HBc IgM may accompany it when infection needs to be excluded. ALT and AST are sometimes added for liver context.
People order this test to verify the success of a vaccine series, for occupational health requirements, before travel, or when previously documented immunity needs confirmation. The result is educational information that a qualified healthcare provider uses to advise on next steps.
- Anti-HBs quantitative (standardized units)
- Anti-HBs qualitative result
- HBsAg (hepatitis B surface antigen)
- Anti-HBc total antibodies
- Anti-HBc IgM antibodies
- HBeAg when included
- Anti-HBe when included
- HBV DNA when indicated
Why people order this test
- Confirm the immune response after hepatitis B vaccination
- Document quantitative antibody levels for school or work
- Track antibody levels over time
- Distinguish vaccine immunity from past infection
- Support a clinician's decision about further vaccination
How to prepare
No fasting is required, and the sample can be collected at any time. A routine venous blood draw is performed at a laboratory. Follow the collection instructions provided by the laboratory.
Understanding your results
Reports are usually available within one to three business days. The numeric level shows how much surface antibody is present, and a healthcare provider interprets whether it reflects adequate protection for your situation.
Quantitative Hepatitis B Immunity Test by state
Alabama
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Alaska
Quantitative Hepatitis B Immunity Test across Alaska.
Arizona
Quantitative Hepatitis B Immunity Test across Arizona.
Arkansas
Quantitative Hepatitis B Immunity Test across Arkansas.
California
Quantitative Hepatitis B Immunity Test across California.
Colorado
Quantitative Hepatitis B Immunity Test across Colorado.
Connecticut
Quantitative Hepatitis B Immunity Test across Connecticut.
Delaware
Quantitative Hepatitis B Immunity Test across Delaware.
Florida
Quantitative Hepatitis B Immunity Test across Florida.
Georgia
Quantitative Hepatitis B Immunity Test across Georgia.
Hawaii
Quantitative Hepatitis B Immunity Test across Hawaii.
Idaho
Quantitative Hepatitis B Immunity Test across Idaho.
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Frequently Asked Questions
What does a quantitative result add?
It reports the exact antibody concentration, which can be more informative than a simple positive or negative result.
Can antibody levels decrease over time?
Yes. Levels can wane, and a healthcare provider can advise whether that matters for your circumstances.
Does a high level mean stronger protection?
A detectable level generally indicates protection, but a healthcare provider interprets the meaning of specific values.
Do I need to fast?
No fasting is needed for this blood test.
What sample is used?
A standard venous blood sample collected at a laboratory.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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