LCN2 and acute kidney injury: The median urinary NGAL levels of non-AKI patients and of pre-renal AKI patients were 7.7 μg/mmolCr (3.3–35 μg/mmolCr) and 14 μg/mmolCr (6.5–56 μg/mmolCr), respectively; thus, pre-renal AKI patients showed a tendency to have a mildly higher urinary NGAL level (p = 0.052).