Health Information and Tools >  Glomerular Filtration Rate (GFR)
Facebook Tweet Share

Main Content

Glomerular Filtration Rate (GFR)

Overview

Glomerular filtration is the process by which the kidneys filter the blood, removing excess wastes and fluids. The estimated glomerular filtration rate (eGFR) is a calculation that determines how well the blood is filtered by the kidneys. This is one way to measure kidney function. The eGFR is also used to find the stage of chronic kidney disease.

The eGFR is often calculated using a formula that compares a person's age and sex to serum creatinine levels. An eGFR under 60 mL/min/1.73 m² may mean kidney disease—the lower the eGFR number, the worse the kidney function. This number is an estimate. It may not be a good measure of kidney health in some people, such as the very young or very old, amputees, or obese people.

Credits

Adaptation Date: 11/1/2022

Adapted By: Alberta Health Services

Adaptation Reviewed By: Alberta Health Services

Adapted with permission from copyrighted materials from Healthwise, Incorporated (Healthwise). This information does not replace the advice of a doctor. Healthwise disclaims any warranty and is not responsible or liable for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.