There have been limited studies on the ability of NGAL to predict AKD with one study showing that higher concentration of NGAL was independently associated with longer duration of AKI (≥ 7 days) (61) and a second study showing that children with a NGAL level ≥300 ng/ml at the time of admission were more likely to develop AKD (27). This evidence concerns the gene LCN2 and acute kidney injury.