urea clearance


u·re·a clear·ance

the volume of plasma (or blood) that would be completely cleared of urea by 1 minute's excretion of urine; originally calculated as urine flow multiplied by urine urea concentration divided by concentration of urea in whole blood rather than plasma, representing blood urea clearance rather than plasma urea clearance.

u·rea clear·ance

(yūr-ē'ă klēr'ăns) C with a subscript indicating the substance removed; volume of plasma (or blood) that would be completely cleared of urea by 1 minute's excretion of urine.