Hepatitis B Surface Antibody, Quantitative
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About Our Hepatitis B Surface Antibody, Quantitative
Our Hepatitis B Surface Antibody (anti-HBs) quantitative test measures the amount of hepatitis B surface antibodies in your blood. These antibodies are produced either naturally in response to a hepatitis B infection or artificially after vaccination against hepatitis B. Here are some reasons one might consider or be advised to get a Hepatitis B Surface Antibody quantitative test:
- Travel, Immigration, or School Enrollment Requirements: Sometimes, for travel, immigration, or school enrollment purposes, there might be a requirement to show quantitative evidence of immunity to hepatitis B.
- Post-Vaccination Immunity Check: After receiving the hepatitis B vaccine series, you might want to confirm if your body has produced a protective level of antibodies. The quantitative test can help determine if you have achieved immunity.
- Healthcare Workers and Other At-risk Professionals: People who are at an increased risk of exposure to hepatitis B, such as healthcare workers, laboratory technicians, or emergency responders, often get tested to confirm immunity.
- Evaluation Before Revaccination: If an initial anti-HBs test shows a low or non-protective level of antibodies, you might be given an additional vaccine dose. A quantitative test can then help evaluate if the booster was effective.
- Chronic Hepatitis B Monitoring: In individuals with chronic hepatitis B, monitoring antibody levels alongside other markers can provide insights into the stage and activity of the disease.
- Post-Exposure: If you believe you've been exposed to hepatitis B (e.g., needlestick injury or sexual contact with an infected person), this test, in conjunction with other hepatitis B markers, can help determine your immunity status and whether post-exposure prophylaxis is required.
- Prior Infection: If you had hepatitis B in the past and cleared the infection, the quantitative test can confirm the presence and level of antibodies.
- Hemodialysis Patients: Patients on hemodialysis are at a higher risk of hepatitis B exposure. They often receive the hepatitis B vaccine and may be tested periodically to ensure they maintain protective antibody levels.