B2M and acute kidney injury: Promising diagnostic injury markers include kidney injury molecule 1 (KIM-1), 16 interleukin 18 (IL-18), 18 neutrophil gelatinase-associated lipocalin (NGAL), 19 liver-type fatty acid binding protein (L-FABP), 20 cystatin C, 21 N-acetyl-beta-D-glucosaminidase (NAG), 22 beta-2-microglobulin (B2M) 23 zinc-alpha-2-glycoprotein (AZGP1), 24 and cytochrome C. 25 Furthermore, several additional biomarkers have been postulated to be of prognostic or diagnostic value in connection with AKI (reviewed in e.g.)10,17,26,27