Centor Score Calculator (McIsaac Modified)
Evidence-based decision tool to determine the likelihood of streptococcal pharyngitis (strep throat) and avoid unnecessary antibiotic prescribing.
Clinical Criteria
Age < 15: +1 point · Age 15-44: 0 · Age ≥ 45: -1 point
Centor / McIsaac Score
0
Base 0 +0 (age)
Probability of GAS Pharyngitis
1-2.5%
Recommendation
No testing or antibiotics needed. Symptomatic treatment only.
★ DoctorScribe — AI Medical Scribe
Speak your sore throat assessment — DoctorScribe scores it for you
Just describe the patient: 'Fever, no cough, tender nodes, exudates.' DoctorScribe auto-calculates Centor score and includes the recommendation in your consultation note. Try the demo →
Clinical Disclaimer: The Centor/McIsaac score is a decision aid, not a replacement for clinical judgment. Patients with very high suspicion of strep should still be tested or treated regardless of score. Always verify against your local prescribing reference and apply clinical judgment.
Built-in clinical decision support — for every patient
DoctorScribe includes Centor Score, qSOFA, NEWS2, Wells Score and 50+ validated clinical scores integrated directly into your consultation notes — no extra tabs.
More Free Tools for Doctors
✨ Try DoctorScribe Demo REGISTERCentor Score (Strep Throat)BMI CalculatoreGFR / Creatinine ClearancePregnancy Due Date Calculator (EDD)Bishop Score (Labor)β-hCG Doubling TimeGanzoni Iron Deficit (Anemia)Pregnancy Weight Gain TrackerAPGAR Score (Newborn)Pediatric Early Warning Score (PEWS)Bone Age / Predicted Adult HeightPediatric BMI Percentile (IAP 2015)Height & Weight Percentile (IAP 2015)Pediatric BP Percentile (AAP 2017)