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HelpTest Code AHBS Anti-Hepatitis B Surface Antibody (Anti-HBs)
Laboratory Code
LAB472
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 5.0 mL / 6.0 mL blood
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs
Specimen Stability
| Specimen type | Serum |
|---|---|
| Ambient | 24 hours |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 1 year |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
Monday through Friday, TAT 1 - 3 days
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
Immunisation recommended: < 10 IU/L
Immune to Hepatitis B: ≥ 10 IU/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Presence of hepatitis B surface antibody suggests previous hepatitis B infection or immunisation
Service Code
32134
LOINC Code Information
5193-8
Alias
AHBS
Antibody to Hepatitis B
HBsAb
Hepatitis B Surface Ab (Anti-HBs)
Surface Ag
Update
Last updated 21/02/2025