Physiology Interstitial fluid volume can be measure by A Tritium oxide - Sodium thiosulfate B Inulin - Radioactive sodium C Aminopyrine - Sucrose D Inulin - Sodium albumin labelled with radioactive Iodine. 💡 Explanation Interstitial fluid volume can be measure by ✓ Correct Answer: D. Inulin - Sodium albumin labelled with radioactive Iodine.