Centor Score (Modified, McIsaac) for Strep Throat Risk checkers

Hidden Throat Threat

1⛑️2 Not-Out. Tool

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Centor / Modified McIsaac Score — Strep Pharyngitis

Quick clinical calculator to estimate the probability of Group A streptococcal pharyngitis. Intended for informational use — not a replacement for clinical judgement.

Enter clinical findings

Fever (history or measured)

No Yes (+1)

Tonsillar exudates No Yes (+1)

Tender/Swollen anterior cervical lymph nodes No Yes (+1)

Cough No (+1) Yes (0)

Tip: This implements the Modified (McIsaac) Centor criteria. For children and adults, interpret alongside local guidelines.

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Centor Score

Enter findings and tap "Calculate Score" to see recommended interpretation and next steps.

Animated: fever • exudates • adenopathy • absence of cough

Interpretation (quick)

• 0–1: Low probability — no testing or antibiotics usually recommended.
• 2–3: Moderate probability — consider rapid antigen testing or throat culture per local guidelines.
• 4: High probability — testing and/or empiric treatment may be appropriate.

Note: This tool provides an estimate only. Follow your local clinical protocols and lab tests for definitive diagnosis.

Quick metadata

• Mobile-ready

• Accessible (aria-live)

• SEO + JSON-LD

Built for quick clinical use • Not a substitute for professional medical judgement.