Hepatitis B Surface Antibody (Immunity)
The Hepatitis B Surface Antibody test measures immunity to hepatitis B virus, typically from vaccination or previous infection.
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What this test measures
The Hepatitis B Surface Antibody test measures antibodies produced by the body's immune system in response to the hepatitis B surface antigen. The presence of adequate hepatitis B surface antibodies in the blood indicates protection against hepatitis B virus infection.
These antibodies, also called anti-HBs, can develop either from successful vaccination with hepatitis B vaccine or from recovery following a natural hepatitis B infection. Anti-HBs also appears as the immune response following hepatitis B vaccination. This test is particularly useful for individuals who need to verify their immunity status for employment, travel, healthcare settings, or personal peace of mind. Results greater than 10-12 mIU/mL typically indicate protection against hepatitis B virus infection.
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Healthcare workers, first responders, and other individuals in occupations with potential blood or body fluid exposure who need to verify their immunity status for employment requirements.
- Individuals planning international travel to areas with higher hepatitis B prevalence who want to confirm their protection before departure.
- People who completed a hepatitis B vaccination series in the past and want to verify that they still maintain protective immunity levels.
- Adults who are unsure about their vaccination history or immunity status and want to determine if they need hepatitis B vaccination or booster shots.
- Individuals who may have been exposed to hepatitis B through household contacts, sexual partners, or other potential exposure situations and need to assess their immune status.
- People with compromised immune systems who may have reduced vaccine response and need regular monitoring of their antibody levels.
- Adults who received blood transfusions or organ transplants before routine hepatitis B screening and want to check their immunity status.
What to expect
Preparation
For 24 hours before specimen collection, patients should not take multivitamins or dietary supplements containing biotin (vitamin B7). No fasting is required. There are no other specific preparation requirements for this test.
Sample Type
A blood sample is collected from a vein in the arm using a standard needle. The procedure is quick and typically causes only minimal discomfort from the needle stick.
Collection
At the lab location, a healthcare professional will verify identification, explain the procedure, and collect the blood sample. The entire visit usually takes less than 15 minutes.
Turnaround
Results are typically available within 1-3 business days and will be accessible through a secure online portal, with no doctor visit required to receive results.
Understanding your results
Results are reported as anti-HBs levels in mIU/mL, with levels of 10.0 mIU/mL or greater indicating adequate immunity to hepatitis B virus. This test helps determine current immune status and the need for vaccination or booster doses.
| Population | Reference Range | Notes |
|---|---|---|
| Adults | ≥10 mIU/mL | Levels greater than 10-12 mIU/mL indicate protection against hepatitis B virus infection, either from vaccination or successful recovery from previous infection. |
| Adults | <10 mIU/mL | Levels less than 10.0 mIU/mL indicate a lack of recovery from acute or chronic hepatitis B or inadequate immune response to vaccination. |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Low or negative hepatitis B surface antibody levels generally mean that individuals are not immune to the hepatitis B virus. If other hepatitis B tests are also negative, it may mean that someone is either not infected or in the very early incubation stage of infection, prior to the point at which antibodies would be formed. Low levels (typically <10 mIU/mL) suggest that measurable protection is inadequate or uncertain. This doesn't diagnose an active infection; it indicates that protective immunity may be insufficient. Low levels may require vaccination or revaccination depending on individual circumstances.
What does a “High” result mean?
High levels of hepatitis B surface antibodies (≥10 mIU/mL) are generally interpreted as indicating recovery and immunity from hepatitis B virus infection. These antibodies also develop in individuals who have been successfully vaccinated against hepatitis B. Among vaccine responders who completed a vaccine series, antibody levels can decline over time, however the majority are still immune and will mount a response when exposed to hepatitis B virus. Very high antibody levels typically indicate robust immunity and may not require immediate revaccination.
Privacy & confidentiality
All test results are completely confidential and protected under HIPAA regulations. Results are not sent to your personal doctor or added to your medical records unless you choose to share them. Testing is not billed through insurance, ensuring your privacy and avoiding any potential impact on your insurance coverage.
Frequently asked questions
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CPT Code: 86706
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
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