Diagnosis and testing
Prompt testing for kidney disease is key to early detection and diagnosis. Taking action at every stage of kidney disease can help your kidneys keep working longer and delay the need for dialysis. If you are diagnosed with kidney disease, you will have regular tests to track the progress of your condition. Make testing a priority! Having regular kidney function tests and following your doctor’s exact instructions can help you best manage your health.
How is kidney disease diagnosed?
A simple kidney function test can help your doctor determine whether you have kidney disease. Your estimated glomerular filtration rate (eGFR) is a measure of your kidneys’ ability to purify your blood. It is usually estimated based on blood test results and age and gender. Your doctor may also do other tests before confirming a kidney disease diagnosis.
An eGFR of 120 or less may indicate kidney disease. Each stage of kidney disease is associated with an eGFR range. It’s important to know your eGFR so you can make informed decisions about your kidney health.
5 stages of kidney disease
Stage 1
Evidence of kidney disease with normal kidney function
eGFR 90-120
Stage 2
Mild to moderate loss of kidney function
eGFR 60-89
Stage 3
Moderate to severe loss of kidney function
eGFR 30-59
Stage 4
Severe loss of kidney function
eGFR is 15-29
Stage 5
End-stage renal disease/kidney failure and need for dialysis or transplantation
eGFR less than 15
Importance of testing
Be your own advocate! Getting a kidney health check-up is essential for your current and future health.
If you have risk factors such as diabetes or high blood pressure, or a family history of kidney failure, you should talk to your doctor and get tested for kidney disease at least annually.
Kidney disease should be treated early to slow its progression. If you’ve been diagnosed with kidney disease, work with your doctor to protect your kidneys—you’ll need to have certain tests regularly to monitor your ongoing kidney health.