Area under ROC of plasma NGAL on day 2 at cutoff 150ng / mL was 0.873 (95% CI: 0.745 - 0.951; P < 0.05), on day 3 at cutoff 240 ng / mL was 0.919 (95% CI: 0.802 - 0.977; P < 0.05), on day 4 at cutoff 242 ng / mL was 0.887 (95% CI: 0.762 - 0.960; P < 0.05).