Hepatitis B vaccine and immunity

Immunity develops through the recommended vaccination course, although individual responses vary. A completed record helps a clinician judge whether you have received the expected doses. In some situations, a blood test is used to assess the immune response, particularly for people whose work or health makes hepatitis B exposure more concerning.

Immunity is not the same as proof that you have never been infected. Testing can distinguish different markers and may be relevant when there has been previous exposure. Learn more about [Hepatitis B] and its effect on the liver.

Gather your vaccine records and ask a clinician whether you need any missed doses or an immune-response test. Tell them about immune-suppressing treatment, dialysis, liver disease, occupational exposure, or a recent possible contact with infected blood or body fluids.

After vaccination, continue sensible blood-safety measures: do not share needles, razors, or toothbrushes, and use appropriate protection for sexual contact. The [Hepatitis B Vaccination] page covers the preventive course in more detail.

Seek urgent advice after a needlestick, bite that breaks the skin, sexual exposure, or blood contacting the eyes or broken skin. Even if you believe you are immune, a clinician should review the timing and circumstances.

Book an assessment if you develop yellowing of the eyes, dark urine, unusual fatigue, nausea, or upper-abdominal discomfort. These symptoms have several possible causes; a [Liver Function Test] may be part of the evaluation.

Ask: Is my vaccination course complete? Would an immune-response blood test be useful? Does my medical treatment change my response? What protection is advised after an exposure?