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HelpTest Code QBSAG Hepatitis B Surface Antigen (Quantitative)
Laboratory Code
LAB2409
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 hurs
Specimen Stability
| Specimen type | Serum |
|---|---|
| Ambient | 7 days |
| Refrigerate | 14 days (preferred) |
| Frozen | 28 days |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
Tuesday, TAT 2 - 8 days
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
< 0.05 IU/mL: considered Non-reactive by the criteria of ALINITY HBsAg
≥ 0.05 IU/mL: considered Reactive by the criteria of ALINITY HBsAg
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Quantification of serum Hepatitis B surface antigen helps the management of patients with Chronic Hepatitis B infection.
Service Code
32131
LOINC Code Information
| Hepatitis B surface antigen, quantitative | 63557-3 |
|---|---|
| QBSAG | 65633-0 |
Alias
QBsAG
Update
Last updated 21/02/2025