CPT/HCPCS
86060
Order Code
CH118
Turnaround Time
72 hours
Test Includes
Anti-Streptolysin O Antibody
Specimen Requirements
Specimen Source
Serum
Transport Container
(Specimen Container)
(Specimen Container)
SST (Tiger Top)
Preferred Specimens
Serum
Minimum Volume (uL)
0.5 mL
Collection Instructions
(Transport Temperature)
(Transport Temperature)
Room temperature
Specimen Stability
| Temperature | Period |
|---|---|
| Room temperature | 72 hours |
| Refrigerated | 5 days |
| Frozen | 30 days |
Test Details
Methodology
Immunoturbidimetric
Clinical Significance
Anti-Streptolysin O Antibody (ASO) – This test is a sensitive test for recent streptococcal infection. A rise in ASO begins about one week after infection and peaks two to four weeks later. ASO levels do not rise with cutaneous infections. In the absence of complications or reinfection, the ASO level will fall to preinfection levels within 6 to 12 months. Over 80% of patients with acute rheumatic fever and 95% of patients with acute glomerulonephritis due to streptococci have elevated levels of ASO
Reference Ranges
<100 IU/mL (<5 Years) <250 IU/mL (5-20 Years) <200 IU/mL (≥21 Years)
