Plasma volume is measured by: (A) Inulin, (B) Evans blue, (C) Mannitol, (D) D2O
Answer is B. Plasma volume is measured using dyes like Evans blue that bind specifically to plasma proteins. It will not diffuse into the interstitium. (REF: TEXTBOOK OF MEDICAL PHYSIOLOGY GEETHA N 2 EDITION, PAGE NO - 62)