ratio of renal plasma flow to kidney weight renal plasma flow (PAH) ratio of renal plasma flow to kidney weight (PAH) 2021-03-30T12:04:41Z A calculated measurement in which the renal plasma flow rate (RPF) is divided by weight (i.e. the heaviness or the degree to which an object is drawn toward the earth by gravity) of one kidney and presented as a ratio, fraction, quotient or percentage. The RPF is the amount of plasma that perfuses the renal tubules per unit time, derived by measurement of the clearance rate of the non-metabolizable solute para-aminohippurate (PAH). CMO:0003686 RGD:25314254 VT:0002847 clinical_measurement_ontology ratio of RPF to kidney weight (PAH) slaulede