Cut-off value Sensitivity Specificity Area under the curve (AUC) Significance (P-value) Cord blood KL-6 (U/ml) >109.1 100 100 1 <0.0001* Urinary β2MG (mg/L) >3 100 100 1 <0.0001* Relative NGAL mRNA level >0.34 92.9 86.7 0.8 <0.0001*

Table 3: Receiver Operating Characteristics (ROC) curve for cord blood Krebs Von den Lungen-6 (KL-6) (U/ml), urinary beta (2) Microglobulin (β2MG) (mg/L) and neutrophil-gelatinase-associated lipocalin2 (NGAL2) gene expression in the studied groups.