Main Content

Anti-Streptolysin O (ASO) Screen

Test Name:Anti-Streptolysin O (ASO) Screen
Epic Order Code:LAB219  
CPT Code:Screen:86063 
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.