During recent decades, great development in molecular biology has led to major advances in the search for novel biomarkers for early detection of AKI [9], as evident by the discovery of several key biomarkers with various specificity and sensitivity, including neutrophil gelatinase-associated lipocalin (NGAL) and kidney injury molecule-1 (KIM-1) [9,10,11,12]. Here, LCN2 is linked to acute kidney injury.