Article · 4 min read
eGFR Explained in Simple Terms
What estimated glomerular filtration rate is, how it is calculated, and why it guides kidney care.
Last updated: 24/9/2026
eGFR is your estimated glomerular filtration rate — a calculated estimate of kidney filtering used to detect and stage kidney disease.
How it is calculated
It is derived from serum creatinine together with age, sex and sometimes body size. It is an estimate, not a direct measurement.
Why it guides care
eGFR is used to stage CKD from 1 to 5 and to time decisions like when to prepare for dialysis.
Frequently Asked Questions
What is a normal eGFR?
Usually 90 or above, though it naturally declines a little with age.
Sources
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This page is for general education only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified doctor about your specific condition.