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HelpTest Code HBSAG Hepatitis B Surface Antigen (Qualitative)
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 5.0mL / 6.0mL blood
Minimum Volume: 1.0mL serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen type | Serum |
|---|---|
| Ambient | 24 hours |
| Refrigerate | 6 days |
| Frozen | 1 year |
Reference Interval
Non-Reactive
Days and Times Performed
Monday through Friday, TAT 1-3 days
Methodology
Chemiluminescent Immunoassay
Service Code
0032129
Update
last updated 16/05/2024
Updated on Methodology.
Unacceptable Condition
| Haemolysis | Gross reject |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
A “reactive” result suggests current hepatitis B infection
Alias
HBSAG, Hep B surface antigen,
Hepatitis Bs Ag