You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is GFR is measured by and explain in detail?
Inulin is uniquely treated by nephrons in that it is completely filtered at the glomerulus but neither secreted nor reabsorbed by the tubules. This propey of inulin allows the clearance of inulin to be used clinically as a highly accurate measure of glomerular filtration rate (GFR) -- the rate of plasma from the afferent aeriole that is filtered into Bowman&;s capsule measured in mL/min.Ref: Ganong&;s review of medical physiology; 24th edition; page no; 679