The product of urinary tissue inhibitor of metalloproteinase-2 and insulin-like growth factor-binding protein-7, 2 markers of AKI, significantly increased at 48 hours post-angiography compared to pre-angiography level (0.51 vs 0.89; P = 0.004) in the sham-RIPC but not in the RIPC group (0.39 vs 0.68; P = 0.091). Here, IGFBP7 is linked to acute kidney injury.