This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Renal physiology, Subject name: Physiology
[{'content': 'The completeness of a 24-hour urine collection is best assessed by the simultaneous measurement of urinary \nSelect and explain. \nA. Volume, B. Urea, C. Creatinine, D. pH', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Creatinine a nitrogenous compound formed as the end product of creatine metabolism. It is formed in the muscle in relatively small amounts, passes into the blood and is excreted in the urine. A laboratory test for the creatinine level in the blood may be used as a measurement of kidney function.Ref: Ganong&;s review of medical physiology; 24th edition; page no; 684', 'role': 'assistant'}]