Test Characteristics of C-Reactive Protein-Based Risk Stratification in Young, Well-Appearing, Febrile Infants.

Yankova, Lyubina C; McDaniel, Corrie E; Kerns, Ellen; Bansal, Ishan; Aronson, Paul L · J Pediatr · 2026

retrospective_cohort · Level III

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Abstract

In a retrospective cohort study, we evaluated the test characteristics of C-reactive protein, alone and in combination with other inflammatory markers, for invasive bacterial infection in well-appearing, febrile infants aged 8-60 days. The combination of procalcitonin and C-reactive protein demonstrated a sensitivity of 91.4% (95% confidence interval: 84.7-95.8) and specificity of 76.5% (95% confidence interval: 75.3-77.6).

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