Streptolysin O Antibody

Sunquest Code:ASO  
Epic Code:LAB3299Epic Name:Antistreptolysin O
Synonyms:ASO; Anti-Streptolysin O
Methodology:Rate nephelometry
Test Includes:Measurement of Antistreptolysin O in serum.
Turnaround Time:Performed twice a week; results are reported the same day.
Special Instructions:Provide patient's age for interpretation of results. Paired serum samples (acute and convalescent) are preferred.

Collection Instructions

Optimal Volume:1 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel) (Red (no gel))
Causes for Rejection:Samples not separated from cells within 2 hours of collection.

Processing and Shipping

Specimen Processing:Within 2 hours centrifuge and aliquot 0.3 mL, 0.15 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Endocrine  (UMMC-East Bank)


Reference Range:

A single ASO analysis may not be meaningful due to the variability of ASO values within the normal population. Both clinical and laboratory findings should be considered in reaching a diagnosis. A single analysis may be less informative than a repeat analysis showing a change.




0-2 y

0- 50

2-4 y


5-8 y


9-11 y


12-18 y


19 years and older




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