Advances in long-term improvement and outcomes of patients with kidney disease will require the use of novel biomarkers to identify patients at high risk for kidney disease and to diagnose kidney disease early for effective treatment. A biomarker is a substance found in the blood, body fluids or tissues that provides a measure of normal biological or pathological processes or response to pharmacological compounds or drugs. There are a wide variety of biomarkers including but not limited to mRNA, proteins and petides, and lipid molecules. In AKI, important pathophysiological processes such as...