McIsaac Score (Modified Centor)
Age-adjusted Centor score, usable in children.
What is McIsaac Score (Modified Centor)?
Age-adjusted Centor score, usable in children. McIsaac Score is intended for use in: Adults.
How to Use the McIsaac Score Calculator
- Enter Tonsillar exudate/swelling.
- Enter Tender anterior cervical lymphadenopathy.
- Enter History of fever > 38°C.
- Enter Absence of cough.
- Enter Age in years.
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
References
- McIsaac WJ et al., CMAJ 1998;158:75-83; McIsaac WJ et al., JAMA 2004;291:1587-1595
Frequently Asked Questions
What is McIsaac Score (Modified Centor)?
Age-adjusted Centor score, usable in children.
Who is McIsaac Score intended for?
Adults. Always confirm applicability to your specific patient before use.
What formula or reference does McIsaac Score use?
McIsaac WJ et al., CMAJ 1998;158:75-83; McIsaac WJ et al., JAMA 2004;291:1587-1595
Is McIsaac Score a diagnosis?
No. McIsaac Score produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.