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HelpTest Code HIVS HIV Antigen-Antibody
Additional Codes
| Epic Ordering Code | LAB473 |
| NBS code | LBC13053 |
| Service code | 31746 |
Specimen Requirements
Submit only one of the following immediately:
Preferred: Gold Top
Acceptable: Red Top
Processing Requirements
Allow specimen to clot for 30 mins and centrifuge within 2 hours
Specimen type: Serum
Volume: 2 mL
Storage/transport requirements: Refrigerated
Specimen Stability
| Specimen type | Serum |
|---|---|
| Ambient | 3 days |
| Refrigerate | 2 weeks (preferred) |
| Frozen | 8 months |
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
Monday through Friday, TAT 3 - 11 days
Reference Interval
Non-reactive
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
To detect the presence of HIV-1/HIV-2 group O antibody and p24 antigen which is associated with AIDS.
LOINC Code Information
56888-1
Alias
HIV-1/-2 Ag/Ab
HIV-1/-2 Ag and Ab
Reflex Testing
Samples screened reactive for HIV are dispatched for confirmatory testing and screening results will be released with confirmed results when they are available.
Referring Laboratory
National University Hospital
Clinical Chemistry, 67724346
Testing Laboratory
Department of Pathology
Singapore General Hospital
Outram Road
Singapore 169608
63214950
Update
Last updated 07/04/2026