Home > Stages of Chronic Kidney Disease
The stages of
chronic kidney disease are determined by the
glomerular filtration rate. Glomerular filtration is the process by which the
kidneys filter the blood, removing excess wastes and fluids. Glomerular
filtration rate (GFR) is a calculation that determines how well the blood is
filtered by the kidneys. It is one way to measure kidney function.
Glomerular filtration rate is usually calculated using a formula that includes a person's age, gender, race, and serum creatinine levels.
A GFR under 60 mL/min/1.73 m² may indicate kidney disease. The lower the GFR
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. In some cases, GFR may also be estimated
with a 24-hour urine collection.
Chronic kidney disease is defined
as either kidney damage or GFR of less than 60 for longer than 3 months.
Kidney damage with normal or high GFR
90 or above
Kidney damage with mildly low GFR
Kidney damage with moderately low GFR
Kidney damage with severely low GFR
ByHealthwise StaffPrimary Medical ReviewerAnne C. Poinier, MD - Internal MedicineKathleen Romito, MD - Family MedicineAdam Husney, MD - Family MedicineSpecialist Medical ReviewerTushar J. Vachharajani, MD, FASN, FACP - Nephrology
Current as ofMay 3, 2017
Current as of:
May 3, 2017
Anne C. Poinier, MD - Internal Medicine & Kathleen Romito, MD - Family Medicine & Adam Husney, MD - Family Medicine & Tushar J. Vachharajani, MD, FASN, FACP - Nephrology
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