Neutrophil gelatinase-associated lipocalin (NGAL), kidney injury molecule-1 (KIM-1), interleukin-18 (IL-18) and liver fatty acid-binding protein (L-FABP) have been suggested to be early markers of acute kidney injury, which effectiveness should be confirmed in studies [3, 4, 11]. This evidence concerns the gene LCN2 and acute kidney injury.