Also known:

Antistreptolysin O, ASO

systematic name:

Antistreptolysin O


What sample is required?

The determination is made from a venous blood sample.

Is some kind of prior preparation necessary?

For this test you do not need any special preparation.

Why do the analysis?

To find out if a person has recently had a group A strep infection; to confirm that there are post-strep sequelae such as rheumatic fever or glomerulonephritis (a type of kidney disease)

When to do the analysis?

When a person has signs or symptoms suggestive of rheumatic fever, such as fever, chest pain, fatigue, and shortness of breath, or edema and dark urine, associated with glomerulonephritis, especially if the person has recently had a group A strep infection which was difficult to diagnose and was not adequately treated.

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