Davis's Lab & Diagnostic Tests
Antistreptolysin O Antibody
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General
Synonym/Acronym:
Streptozyme, ASO.
Rationale
To assist in the diagnosis of group A streptococcal infection.
Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.
Normal Findings
(Method: Immunoturbidimetric) Adult/older adult: Less than 330 international units/mL; 17 yr and younger: Less than 150 international units/mL. Values will vary between laboratories and methods.
| Age | Conventional Units |
| Newborn–1 yr | Equal to or less than 200 international units/mL |
| 2–12 yr | Equal to or less than 250 international units/mL |
| 13 yr–adult | Equal to or less than 330 international units/mL |
Critical Findings and Potential Interventions
N/A
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General
Synonym/Acronym:
Streptozyme, ASO.
Rationale
To assist in the diagnosis of group A streptococcal infection.
Patient Preparation
There are no food, fluid, activity, or medication restrictions unless by medical direction.
Normal Findings
(Method: Immunoturbidimetric) Adult/older adult: Less than 330 international units/mL; 17 yr and younger: Less than 150 international units/mL. Values will vary between laboratories and methods.
| Age | Conventional Units |
| Newborn–1 yr | Equal to or less than 200 international units/mL |
| 2–12 yr | Equal to or less than 250 international units/mL |
| 13 yr–adult | Equal to or less than 330 international units/mL |
Critical Findings and Potential Interventions
N/A
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