<prompt> Which of the following methods is NOT used for measurement of body fluid volumes: March 2013Antipyrine for total body waterInsulin for extracellular fluidEvans blue for plasma volume125I-albumin for blood volume  <response>: Ans. D i.e. 125I-albumin for blood volume Blood cell volume is determined by hematocrit value and radioisotope method mainly Cr52. 