where does creatinine come from in the body
Creatinine Creatinine (/kriˈætɪnɪn/ or /kriˈætɪniːn/; from Greek: κρέας, translit. kreas, lit. 'flesh') is a breakdown product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body (depending on muscle mass).
Small intestine Absorption of the majority of nutrients takes place in the jejunum, with the following notable exceptions:
Small intestine Food from the stomach is allowed into the duodenum through the pylorus by a muscle called the pyloric sphincter.
Fluid balance These outputs are in balance with the input of ~2500 ml/day.[9]