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Stages Of Chronic Kidney Disease

Overview

The stages of chronic kidney disease are determined mostly by the estimated glomerular filtration rate (eGFR). Glomerular filtration is the process by which the kidneys filter the blood, removing excess wastes and fluids. The eGFR is a calculation that determines how well the blood is filtered by the kidneys. It is one way to measure kidney function. Your doctor will also use a test that measures the amount of protein in your urine and the cause of your kidney disease to guide your treatment.

The eGFR is often calculated using a formula that includes a person's age, sex, and serum creatinine levels. An eGFR under 60 mL/min/1.73 m² may indicate 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 people who have obesity. In some cases, eGFR may also be estimated with a 24-hour urine collection.

Chronic kidney disease is defined as either kidney damage or an eGFR of less than 60 for longer than 3 months.

Stages of chronic kidney disease
StageDescriptioneGFRWhat this means to you
1Kidney damage without symptoms90 or aboveYour doctor will try to find the cause of your kidney disease and may begin treatment.Manage other health problems, such as diabetes and high blood pressure. See your doctor regularly to monitor your condition.
2Mild decline in kidney function60–89Your doctor will estimate how quickly your disease is progressing. Manage other health problems, such as diabetes and high blood pressure. Continue regular monitoring.
3 aModerate decline in kidney function45–59In stages 3a and 3b, your doctor may check for complications, such as anemia and bone disease, and begin treatment if needed. Continue monitoring.
3 bModerate to severe decline in kidney function30-44In stages 3a and 3b, your doctor may check for complications, such as anemia and bone disease, and begin treatment if needed. Continue monitoring.
4Severe decline in kidney function15–29Decide what type of treatment you want if kidney failure develops. Continue treatment and monitoring.
5Kidney failureBelow 15Start dialysis, have a kidney transplant, or choose palliative care. Continue to see your doctor for treatment and testing.
© 2017-2025 Healthwise, Incorporated. This information does not replace the advice of a doctor.
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