Anti Streptolysin O Titre

Anti Streptolysin O Titre


The ASO Titre test measures the level of Anti-Streptolysin O antibodies in your blood, which are produced after a Group A Streptococcus infection (such as strep throat or skin infections). Elevated levels may indicate a recent or past strep infection and can help doctors assess complications like rheumatic fever or post-streptococcal glomerulonephritis. This test supports diagnosis when symptoms persist after a sore throat or unexplained inflammatory conditions occur. It is commonly used alongside other clinical findings for a complete assessment.

Parameters Covered

Anti Streptolysin O Titre

What the Test Measures

This test measures the amount of Anti-Streptolysin O antibodies in your blood. These antibodies are produced by your immune system in response to toxins released by streptococcal bacteria. The level helps determine whether you have had a recent strep infection.

Turnaround Time for Results


Leicester: Most results are available within 1–2 working days (some tests may take longer)
Outside Leicester: Results are typically available within 2–4 working days (some tests may take longer)
Certain parameters: Some specialised tests may take 2–3 weeks to process.

How Results Are Delivered

Your personalised report will be securely sent to your registered email address.