Renal blood flow is determined by using clearance of para -aminohippuric acid (PAH) and the hematocrit of the blood.

Question

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The clearance of para-aminohippuric acid (PAH) is used to measure renal plasma flow because PAH is almost completely cleared from the plasma in a single pass through the kidneys. The hematocrit is then used to adjust this value to renal blood flow, as it provides the proportion of blood volume that is occupied by red blood cells, allowing for the calculation of the total blood flow through the kidneys.

Renal Blood Flow Is Determined by Using Clearance of Para