What should you know about hepatitis B immunoglobulin injection?

This treatment is considered after contact with infected blood or body fluids, such as a needlestick or another exposure assessed by a clinician. It works by supplying antibodies while your immune system responds. It is different from the hepatitis B vaccine, which teaches the immune system to make its own protection and is often given as part of the same prevention plan. Immunoglobulin does not treat established hepatitis B infection.

Seek medical assessment promptly after a possible exposure and describe when it happened, how contact occurred, and whether you have received hepatitis B vaccination. A clinician may recommend immunoglobulin, vaccination, blood tests, or follow-up testing based on the exposure and your records. Do not delay because the useful window can be limited. Keep the wound clean if skin was broken, and take the follow-up plan seriously. More background is available in Hepatitis B Vaccination and Liver Function Test.

Arrange urgent medical advice for any significant exposure, especially a needlestick, bite, or blood contact with broken skin or eyes. Seek emergency help for trouble breathing, facial swelling, collapse, or rapidly worsening illness after an injection. During follow-up, contact a clinician about yellowing skin, dark urine, unusual fatigue, vomiting, or abdominal pain; these symptoms need assessment and do not by themselves identify the cause.

Ask whether immunoglobulin is appropriate for the exposure, whether you also need Hepatitis B Vaccination, and when blood tests should be arranged. Confirm which symptoms should prompt review and how your vaccination record changes the plan.