Modified Centor Score (McIsaac Score) Calculator

Criteria for suspected bacterial pharyngitis (Streptococcal pharyngitis)
Antibiotic use recommended for scores of 3 or higher

Age : 3-14 years (1 point) 15-44 years (0 points) Over 44 years (-1 point)

※ Probability of bacterial pharyngitis (Streptococcal pharyngitis) based on Centor Score
– 0 points or less : 1 ~ 2.5% – Symptomatic treatment
– 1 point : 5 ~ 10% – Symptomatic treatment
– 2 points : 11 ~ 17% – Symptomatic treatment
– 3 points : 28 ~ 35% – Antibiotic treatment (perform RADT first if available)
– 4 points or more : 51 ~ 53% – Antibiotic treatment (perform RADT first if available)
*RADT : Rapid Antigen Detection Test for S. pyogenes