A hospital patient produces 4 mL/min of urine with a urea concentration of 8 mg/mL. Venous blood draw reveals urea concentration of 0.4 mg/mL. What is the percentage of cleared urea from glomerular filtrate?
A) 40%
B) 56%
C) 64%
D) 72%
E) 80%

Question

Quizplus · Accepted Answer

Percentage of cleared urea from glomerular filtrate = (1 - (venous urea concentration / urine urea concentration)) x 100= (1 - (0.4 / 8)) x 100= (1 - 0.05) x 100= 0.95 x 100= 95%

A Hospital Patient Produces 4 ML/min of Urine with a Urea