ANTI STREPTOLYSIN-O; ASO, QUANTITATIVE

What this test checks

Measures antibodies your body made against streptococcus bacteria. High levels suggest a recent strep infection, which can sometimes damage the heart valves (rheumatic fever) or kidneys.

Why do people get this test?

Doctors order this after a sore throat that didn't heal properly, or when joint pain, rash, or kidney problems appear after a throat infection.

When you should consider this test

• Joint pain after a recent sore throat
• Children with unexplained joint or heart symptoms
• Suspected rheumatic fever

How to prepare

No fasting needed.