free water clearance calculated kidney physiological measurement free water clearance level to body weight ratio clinical_measurement_ontology renal water absorption level to body weight ratio A calculated measurement in which the value for free water clearance is divided by the total body weight of the organism and presented as a ratio, fraction, quotient or percentage, thus normalizing it to body weight. renal water reabsorption level to body weight ratio kidney water reabsorption level to body weight ratio CMO:0003421 slaulede nephron water absorption level to body weight ratio 2020-05-28T15:56:24Z