LCN2 and acute kidney injury: In 23 adult colistimethate sodium recipients, of which 11 were hospitalized in the ICU, a plasma NGAL level more than 285 ng/mL at 56 h after treatment was a powerful predictor of AKI, with an area under the receiver operating characteristics curve (AUC) of 0.796 (95% CI, 0.609 to 0.983) [163].