AUC for CRP was 0.82 (0.78–0.86), P < 0.001, with a cutoff of ≥ 40 mg/L in predicting an infection diagnosis with a sensitivity of 75% and a specificity of 76%; the AUC for NLR was 0.73 (0.69–0.78). The gene discussed is CRP; the disease is infection.