Paper I — 2024 December (Supplementary) (2019 Scheme) — Qiii
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Paper I
2024 December (Supplementary) (2019 Scheme) · 100 marks · 180 min
Question
The serological test used for this condition is
a) Coagulase test
c) Bacitracin test
b) Anti Streptolysin O test
d) Antiphosphatase test
Qiii1 marksMCQs
Answer
- [x] b) Anti Streptolysin O test
The Antistreptolysin O (ASO) titre is the standard serological test used to demonstrate a recent/preceding streptococcal infection in a patient with suspected acute rheumatic fever or rheumatic heart disease, since a positive throat culture is often no longer obtainable by the time rheumatic sequelae manifest (typically 2–4 weeks after the original pharyngitis). Coagulase and bacitracin tests are used for staphylococcal/streptococcal identification in culture (not serodiagnosis of prior infection), and “antiphosphatase test” is not a recognized standard diagnostic test.
