Fig. 4

a–d Performance of SOFA score and biomarkers. a ROC curves of significant variables in predicting septic AKI. b ROC curve of serum NGAL, serum calprotectin, and SOFA score in predicting septic AKI. c ROC curves of significant variables in predicting in-hospital mortality. d ROC curve of serum and urinary NGAL and SOFA score in predicting in-hospital mortality. SOFA Sequential Organ Failure Assessment, NGAL neutrophil gelatinase-associated lipocalin