Which of the following methods is not used for measurement of body fluid volumes?: (A) Antipyrine for total body water, (B) Insulin for extracellular fluid, (C) Evans blue for plasma volume, (D) 125I-albumin for blood volume
Answer is D. Albumin tagged with radioactive iodine 131 ie RISA, radioiodinated serum albumin is used. Ref: Textbook of medical physiology by N Geetha, 2nd edition, page no. 117