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HelpTest Code ASOT Anti-Streptolysin O Titre (ASO Titre)
Additional Codes
| Epic Ordering Code | LAB219 |
|---|---|
| NBS code | LBC03867 |
| Service code | 23105 |
Specimen Requirements
Submit only one of the following
| Preferred: | |
| Red Top Tube | Gold top SST |
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 6.0 mL, 0.5 mL / 5.0 mL
Minimum Volume: 0.5 mL serum
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Latex Agglutination
Days and Times Performed
Monday through Friday, TAT 1 - 3 days
Reference Interval
< 200 IU/mL
Testing Laboratory
National University Hospital
Clinical Microbiology, 67724343
Useful For
Diagnosis of acute group A streptococcal infection, causing rheumatic fever or glomerulonephritis
Update
Last updated 01/09/2026
Special Instruction
Paired sera is useful in demonstrating a rising titre. Submit acute and convalescent specimens 2 weeks apart.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 12 hours |
| Refrigerate | 3 days |
| Frozen | 7 days |
LOINC Code Information
25788-1