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| Title | STREPTOLYSIN O ANTIBODIES (ASO) |
| Specimen Requirement | <p>1 SST/1.0 mL serum (0.5 mL minimum). Centrifuge and refrigerate serum.</p> |
| Methodology | |
| Stability | Refrigerate: 8 days; Frozen: 2 weeks |
| Reference Range | By Report |
| Turnaround | 1 day |
| Clinical Use | <p>Document exposure to streptococcal streptolysin O. A marked rise in titer or a persistently elevated titer indicates that a Streptococcus infection or poststreptococcal sequelae are present. Concentrations of ASO antibodies are increased in 80-85% of patients with acute rheumatic fever.</p> |
| Test Code | ASO |
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