MB and acute kidney injury: Using reclassification methods, the addition of myoglobin in clinical models resulted in a statistically significant improvement in AKI prediction: NRI was constantly greater than 0 (5 models over 5) ranging from 0.201 (0.001–0.403) to 0.381 (0.176–0.586) and IDI was greater than 0 in 3 over 5 models ranging from 0.008 (− 0.003–0.018) to 0.039 (0.015–0.064).