Description
The ASO Titre detects antibodies produced after a streptococcal infection, making it useful for investigating complications that can follow a strep infection.
About the ASO Titre (ASOT) Test
This blood test measures Antistreptolysin O (ASO) antibodies, which the body produces in response to infection with group A streptococcus bacteria. A raised or rising level indicates a recent strep infection and can help investigate related complications such as rheumatic fever or certain kidney conditions. It is valuable when these post-infection complications are suspected.
Preparation and turnaround
A simple venous blood sample is taken with no fasting required. Results are usually available within one to two working days. Because a single result is most meaningful when compared over time, your doctor may recommend a repeat test and will interpret results alongside your symptoms.
Frequently asked questions
What does a raised ASO titre indicate?
It suggests a recent streptococcal infection and can help investigate complications such as rheumatic fever or certain kidney conditions.
Why might the test be repeated?
A rising or falling level over time is often more informative than a single reading, so a repeat test may be recommended.
Is fasting required?
No fasting is needed for the ASO Titre test.
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