Antistreptolysin O (ASO) Reagent is used for the qualitative and semi‐ quantitative measurement of antibodies to streptococcal exoenzymes in human serum.
 
SPECIFICATION
Brand: Teco Diagnostics
Cat. No.: ASO-100
Test: Antistreptolysin O (ASO) Reagent Set (ASO‐100)
Number of Tests: 100 tests
Format: Liquid
Method: Agglutination Reaction
Testing Procedure: Manual
Storage Temperature: 2‐8°C
Qualitative Test:
Positive: Any observable agglutination in the reaction mixture
Negative: Uniform milky suspension with no agglutination
Expected Values: Normal values can vary with age, season of the year and geographical area. The upper limit of normal ASO titers for preschool children is <100 IU/mL and in school age children or young adults is usually 166‐250 IU/mL. The average can be established at <200 IU/mL.  
Limitations of Procedure: Results should be read two minutes after the mixing of the reagent on the slide. A reading obtained after this period of time may be incorrect. Existence of prozone at high titers has not been encountered.