How is the Centor score for group A streptococcal (GAS) pharyngitis (strep throat) interpreted?

Updated: May 06, 2020
  • Author: John R Acerra, MD; Chief Editor: Jeter (Jay) Pritchard Taylor, III, MD  more...
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Answer

A score of 0-1 makes GAS infection unlikely; a score of 4 makes it likely. In adults, the positive predictive value of these criteria is around 40% if 3 criteria are met and about 50% if 4 criteria are met.


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