system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which substances are best suited to measure interstitial fluid volume?
assistant
The correct answer is  Interstitial fluid volume= ECF volume - Plasma volume Inulin best indicator of ECF volume and 125I-albumin is most commonly used for plasma volume estimation