🫘 Kidney Function

eGFR: What It Means for Your Health

eGFR estimates how much blood your kidneys filter per minute, providing the best overall measure of kidney function. It is calculated from serum creatinine, age, sex, and race using standardized equations (CKD-EPI). eGFR is used to stage chronic kidney disease (CKD) and monitor kidney function over time. Normal kidneys filter about 90-120 mL/min, and values are reported per 1.73 square meters of body surface area.

Full Name
Estimated Glomerular Filtration Rate (eGFR)
Normal Range
90–120 mL/min/1.73m2
Also Known As
GFR, Glomerular Filtration Rate

Reference Range

LowNormal: 90–120 mL/min/1.73m2High

Reference ranges may vary between laboratories, age groups, and sexes. The values shown are general adult reference ranges. Always compare your results to the specific range provided by your testing laboratory.

What Is eGFR?

eGFR estimates how much blood your kidneys filter per minute, providing the best overall measure of kidney function. It is calculated from serum creatinine, age, sex, and race using standardized equations (CKD-EPI). eGFR is used to stage chronic kidney disease (CKD) and monitor kidney function over time. Normal kidneys filter about 90-120 mL/min, and values are reported per 1.73 square meters of body surface area.

Commonly included in:

Kidney Function PanelComprehensive Metabolic Panel

What Does High eGFR Mean?

Above 120 mL/min/1.73m2

An eGFR above 120 is generally normal and does not indicate disease. Very high eGFR can occur in early diabetic nephropathy (hyperfiltration stage) or during pregnancy. In most clinical contexts, a high eGFR is not a concern.

What Does Low eGFR Mean?

Below 90 mL/min/1.73m2

Low eGFR indicates reduced kidney function. CKD stages: Stage 1 (>90, with kidney damage markers), Stage 2 (60-89), Stage 3a (45-59), Stage 3b (30-44), Stage 4 (15-29), Stage 5 (<15, kidney failure). Common causes of declining eGFR include diabetes, hypertension, glomerulonephritis, polycystic kidney disease, and aging. eGFR below 60 sustained for 3+ months defines chronic kidney disease.

Related Biomarkers in Kidney Function

Creatinine
Waste product from muscle metabolism filtered by the kidneys.
Range: 0.6–1.2 mg/dL
BUN
Waste product from protein metabolism filtered by the kidneys.
Range: 7–20 mg/dL

Track Your eGFR Over Time

Upload your blood test results to Hemoly and see how your eGFR levels change over time. Get trend analysis, educational insights, and a personal health timeline.

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Medical Disclaimer

This information is for educational purposes only and is not intended as medical advice, diagnosis, or treatment. Reference ranges may vary between laboratories. Always consult a qualified healthcare professional for interpretation of your blood test results and before making any health decisions.