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What is glomerular filtration rate (GFR)?

ANSWER

The glomerular filtration rate, or GFR, is a measure of how well your kidneys are cleaning your blood -- taking out waste and extra water. An estimated GFR test (eGFR) can tell your doctor how much of a certain waste product called creatinine is in your blood.

The test gets its name from the parts of your kidney that filter waste out -- they’re called glomeruli.

SOURCES:

National Kidney Foundation: “Glomerular Filtration Rate.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Glomerular Filtration Rate.”

University of Rochester College of Medicine: “Glomerular Filtration Rate.”

University of North Carolina Kidney Center: “Glomerular Disease.”

American Journal of Roentgenology : “Kidney dimensions at sonography.”

Lab Tests Online: “Estimated Glomerular Filtration Rate,” “Creatinine.”

Reviewed by Minesh Khatri on December 26, 2017

SOURCES:

National Kidney Foundation: “Glomerular Filtration Rate.”

National Institute of Diabetes and Digestive and Kidney Diseases: “Glomerular Filtration Rate.”

University of Rochester College of Medicine: “Glomerular Filtration Rate.”

University of North Carolina Kidney Center: “Glomerular Disease.”

American Journal of Roentgenology : “Kidney dimensions at sonography.”

Lab Tests Online: “Estimated Glomerular Filtration Rate,” “Creatinine.”

Reviewed by Minesh Khatri on December 26, 2017

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