Urea reduction ratio

The urea reduction ratio (URR), is a dimensionless number used to quantify dialysis treatment adequacy.Body water: Intracellular fluid/Cytosol The urea reduction ratio (URR), is a dimensionless number used to quantify dialysis treatment adequacy. U R R = U p r e − U p o s t U p r e × 100 % {displaystyle URR={frac {U_{pre}-U_{post}}{U_{pre}}} imes 100\%}