| Test Name: | Anti-Streptolysin O (ASO) Screen |
| Epic Order Code: | LAB219 | | |
| CPT Code: | Screen: | 86063 | |
| | Titer: | 86060 | |
| Specimen(s) Type: | Serum; 1.0 mL |
| Acceptable Container(s): |   Tops are gold and red. |
| Testing Schedule: | Tests performed daily. |
| Turn Around Time: | STAT: NA | | |
| | Routine: Batch testing performed at 7 a.m. and 2 p.m. |
| Collection Information: | No special patient preparation is required. Obtain specimen by standard collection procedures. |
| Transport Information: | Deliver to lab immediately. All specimens must be signed into the laboratory. |
| Reference Clients: | If unable to deliver immediately, centrifuge the specimen and separate the serum from the red cells. Store and transport at 2-8° C within 8 days. For longer storage, freeze samples -20° C. |
| Causes for Rejection: | Improperly labeled, incorrect container, contaminated, insufficient quantity, incorrect/delay in transport, excessive hemolysis, lipemia or turbidity. |
| Reference Range: | Negative | <200 IU/mL | |
| | Positive | >200 IU/mL | |
| Additional Information: | A rise in titer begins one week after infection and peaks two to four weeks later. |
| | Reflexive Test: If positive, an ASO Titer will be ordered. |