Serum Creatinine (血清肌酐)

–Commonly used marker for GFR–Colorimetric and enzymatic methods–Cheap (colorimetric methods)

–A substantial proportion of patients with reduced

GFR

display normal creatinine

levels

–Influenced by muscle mass , gender, age, race–Influenced by tubular secretion and reabsorption –Influenced by dietary intake of creatin and creatinine