…In older, malnourished, amputee or muscle wasted patients, an apparently normal creatinine may therefore correspond to markedly impaired renal function [3]. Urine output can change…

…amputees, patients with hepatic cirrhosis — creatinine based eGFR substantially overestimates renal function. Staging of chronic kidney disease Stage eGFR Description : : : G1 ≥ 90 Normal or high…