This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Which of the following methods is NOT used for measurement of body fluid volumes: March 2013 \nSelect and explain. \nA. Antipyrine for total body water, B. Insulin for extracellular fluid, C. Evans blue for plasma volume, D. 125I-albumin for blood volume', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. 125I-albumin for blood volume Blood cell volume is determined by hematocrit value and radioisotope method (mainly Cr52).', 'role': 'assistant'}]