Which of the following agents is used to measure glomerular filtration rate (GFR) –: (A) Iodohippurate, (B) Tc99m – DTPA, (C) Tc99m – MAG3, (D) Tc99m – DMSA
Answer is B. In dynamic renal scintigraphy :-


GFR  → Tc - 99m - DTPA
Effective renal plasma flow → Tc-99m - MAG3, I - 123 - OIH.