Quick highlights
- Supportive marker of recent streptococcal exposure (timing matters)
- Used in specific clinician-directed evaluation pathways
- Often interpreted with CRP/ESR and clinical findings
- A single ASO titre is not diagnostic
- No fasting; simple serum blood test
- Rising/falling titres over time may add information in some cases
- Antibiotics and timing can influence interpretation context
- Useful with anti-DNase B in selected cases
- Home blood collection available in many service areas
- SEO coverage: ASO titre test, antistreptolysin O test, post strep blood test support
What’s included
Preparation
- Book blood draw (home or lab)
- No fasting required unless combined tests need fasting
- Note timeline of sore throat/fever/skin infections for clinician
- Disclose antibiotics taken recently and dates
- Collect serum sample via trained phlebotomist
- Download report from <a href='/my-account/'>View reports</a>
- Review with clinician; repeat titres may be advised
- Follow clinician advice for any further tests
FAQs
A blood test measuring antibodies to streptolysin O, used as supportive information about recent streptococcal exposure.
No.
Not necessarily. ASO reflects antibody response and timing matters; it does not confirm active infection by itself.
It rises after exposure and may remain elevated for some time; clinicians interpret with timeline and symptoms.
In selected evaluations of post-streptococcal complications or when prior infection history is relevant.
CRP/ESR, anti-DNase B, throat swab tests, and clinical assessment depending on symptoms.
Antibiotics affect infection course, but antibody levels reflect immune response and timing; clinicians interpret accordingly.
No. Rheumatic fever diagnosis is clinical and requires criteria; ASO may provide supportive evidence of prior exposure.
Often same day or within 24 hours.
Serum blood sample.
Yes in many service areas.
No. Consult a clinician for appropriate evaluation and treatment decisions.
Yes, depending on timing and individual response; clinicians may use other tests if needed.
Download from <a href='/my-account/'>View reports</a>.
Notes
ASO titres indicate recent streptococcal exposure and not active infection alone.
