Most accurate measurement of extracellular fluid volume (ECF) can be done by using:: (A) Sucrose, (B) Mannitol, (C) Inulin, (D) Aminopyrine
Answer is C. -Antipyrine or Aminopyrine is used for TBW measurement. Hence, option D is ruled out. -No ideal marker for ECF measurement is available. -Among the given options, most accurate measurement of ECF volume is that obtained by using Inulin.