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
Two substances that can probably be used to determine filtration fraction are -
assistant
The correct answer is  Ans. is 'd' i.e., Inulin and PAH o GFR is measured by inulin and renal plasma flow is measured by PAH.