Probability of Strep Pharyngitis
Total Score
Strep likelihood 1-10%. No further testing or antibiotics needed.
Disclaimer: The clinical scoring and algorithms on this platform are intended strictly for professional informational purposes. They do not constitute a definitive medical diagnosis, treatment, or clinical decision. The final judgment and responsibility lie with the treating physician.
Yasal Uyarı: Bu platformdaki klinik skorlamalar ve algoritmalar yalnızca sağlık profesyonellerini bilgilendirme amaçlıdır. Herhangi bir kesin tıbbi teşhis, tedavi veya klinik karar yerine geçemez. Nihai karar ve sorumluluk hastayı yatak başında değerlendiren hekime aittir.
The Modified Centor Score (McIsaac score) estimates the probability that pharyngitis is caused by Group A Streptococcus (GAS). By evaluating fever, tonsillar exudates, cervical lymphadenopathy, absence of cough, and patient age, it rationalizes the use of rapid antigen detection testing (RADT) and limits inappropriate empirical antibiotic prescriptions for viral sore throats.
The most critical prerequisite for using this score is that the patient must lack obvious viral symptoms. If the patient has rhinorrhea, conjunctivitis, or a prominent cough, the etiology is almost certainly viral, and the Centor score should not be applied.
Centor RM, Witherspoon JM, Dalton HP, Brody CE, Link K. The diagnosis of strep throat in adults in the emergency room. Med Decis Making. 1981;1(3):239-246.
McIsaac WJ, White D, Tannenbaum D, Low DE. A clinical score to reduce unnecessary antibiotic use in patients with sore throat. CMAJ. 1998;158(1):75-83.
Disclaimer: The clinical scoring and algorithms on this platform are intended strictly for professional informational purposes. They do not constitute a definitive medical diagnosis, treatment, or clinical decision. The final judgment and responsibility lie with the treating physician.