Table 2 Performance of CRP, PCT, and nCD64 index for diagnosis of infection (n = 201)

From: Neutrophil CD64 index for diagnosis of infectious disease in the pediatric ICU: a single-center prospective study

Biomarker	Cut-off	Sensitivity	Specificity	PPV	NPV	PLR	NLR	Accuracy	AUC (95%CI)
CRP	30 mg/L	76.7%	59.7%	0.77	0.59	1.9	0.39	61.6%	0.661 (0.585–0.736)
PCT	0.5 ng/mL	30%	90.7%	0.72	0.6	3.32	0.7	62.1%	0.677 (0.603–0.752)
nCD64 index	0.14	68.8%	90.7%	0.86	0.77	7.4	0.34	80.5%	0.811 (0.748–0.873)

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