<prompt> 1-125 labelled albumin is used for measurement of:Plasma volumeInterstitial fluid volumeICFECF  <response>: Ans. a Plasma volumeRef: Ganongs Review of Medical Physiology 25th Ed; Page No-31Indicators used for Body fluids measurementCompartmentIndicator usedTotal body water 2H2 O Deuterium oxide, 3H2 O Tritium Oxide, AntipyrineExtracellular fluid 22Na, 125L-iothalamate, Thiosulfate, Inulin, SucroseIntracellular fluidCalculated as Total body water - Extracellular fluid volume.Plasma volume 125L-Albumin, Evans blue dye T-1824Mn:PIEBlood volume 51Cr-labeled red blood cells, or calculated as Blood volume Plasma volume 1-HematocritInterstitial fluidCalculated as Extracellular fluid volume - Plasma volume 