
About this test
Measures hepatitis B surface antibodies (anti-HBs) to assess evidence of immunity after vaccination or previous infection. It does not test for current hepatitis B infection.
At a glance
- Sample: Blood
- Collection: Self-collected sample using the supplied kit
- Estimated turnaround: 1 day from laboratory receipt of a usable sample
What this test measures
- Hepatitis B surface antibodies (anti-HBs)
- Antibodies associated with immunity after vaccination or previous infection. A concentration above the laboratory threshold can support immunity, but it does not test for current hepatitis B infection.
How clinicians use this test
Clinicians use Hepatitis B surface antibodies (anti-HBs) to assess infection, previous exposure or immunity depending on the specific marker. Screening results may require confirmation and must be interpreted against exposure timing and vaccination history.
Is this the right test for you?
An adult seeking the stated hepatitis marker after considering exposure timing, vaccination history and the difference between screening for infection and checking immunity.
Preparation and collection
Return the sample on the same day it is collected. Do not post over weekends or bank holidays.
Understanding your result
Results are usually reported as detected, not detected, reactive or non-reactive rather than simply “normal”. A reactive or detected result may need confirmation or treatment; a non-detected result does not exclude exposure during the window period or infection at a site that was not sampled.
Your results and next steps
Review the marker-specific meaning carefully: immunity, previous exposure and current infection are different questions. Share a reactive, unexpected or unclear result with a clinician and complete any recommended confirmatory test.
Limitations
Testing during a window period can miss infection. A screening result may not distinguish current infection, previous exposure and immunity; use the specific result pathway stated above.
When to get medical help
Do not wait for a home-test result if you feel seriously unwell. Call 999 for a life-threatening emergency, or use NHS 111 when you need urgent advice and are unsure what to do.
Who this test is for
- People who want a clearer view of the concern described above
- Anyone comfortable using the stated sample-collection method
- People who want doctor-reviewed results and practical next-step guidance
How it works
How to prepare
- Read the instructions before collecting your sample
- Check whether timing, fasting or medication guidance applies
- Collect and post on the same day wherever possible
Understanding your results
Clear ranges and doctor guidance
Your secure report shows the measured values, reference ranges and a doctor’s comment where appropriate.