"Sodium FENa Calculator - Acute Kidney Injury" is a mobile app designed to help health practitioner to calculate the fractional excretion of sodium (FENa). This FENa score in "Sodium FENa Calculator - Acute Kidney Injury" app can be used to determine if acute renal failure or acute kidney injury (AKI) is due to pre-renal, renal, or post-renal pathology. The result of calculation will assist in management of patient with acute kidney injury or renal failure. There are several features of "Sodium