CHI3L1 and chronic kidney disease: Furthermore, continues CHI3L1 exhibited an AUC of 0.901, sensitivity of 0.826 and specificity of 0.8 for discriminating cKD at a cut-off of 3775.0 pg/ml (Fig. 5C), and an AUC of 0.952, sensitivity of 0.818 and specificity of 0.971 for discriminating iKD at a cut-off of 5773.8 pg/ml from febrile illness (Fig. 5D).