ASO Titre
Evidence of a recent streptococcal infection, in suspected rheumatic fever.
Also known as: ASO, antistreptolysin O, rheumatic fever test
Price on request
We can collect this sample at your home, free of charge. Book a home visit.
- Turnaround
- 24–48 hours
- Preparation
- No fasting needed. Eat and drink normally.
- Sample
- Blood sample
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About this test
A raised ASO shows the immune system has recently met group A streptococcus. That matters when the question is rheumatic fever or post-streptococcal kidney disease, both of which follow a throat infection by some weeks — by which time the original infection has cleared.
What it measures
- Antistreptolysin O titre
A note on results. A single test is one part of a clinical picture, not a diagnosis. Discuss your report with a qualified doctor, who will read it alongside your history and examination.
Related to
- Fever & infection
- Heart
Often ordered with this
24-Hour Ambulatory Blood Pressure Monitor
Blood pressure measured through the day and night, away from the clinic.
- 48 hours after return
- No fasting
24-Hour Holter Monitor
Records every heartbeat for a day, to catch rhythm problems that come and go.
- 48 hours after return
- No fasting
AFB Smear & Culture
Microscopy and liquid culture for tuberculosis.
- Smear same day; culture up to 6 weeks
- No fasting