Revision Session

Question 1

Define clearance

What is it used to measure?

Answer 1

volume of plasma cleared of a certain substance per unit time (ml/min)
represents a theoretical volume of plasma cleared of any substance
- used to measure GFR and RPF

Question 2

What is the clearance formula?

Answer 2

Clearance = (urine conc x urine flow) / plasma conc
or
Clearance = amount excreted / plasma conc