eGFR (Estimated GFR)
Track eGFR (Estimated Glomerular Filtration Rate) for kidney function assessment. Learn about renal health monitoring precision.
What is eGFR (Estimated GFR)?
Estimated glomerular filtration rate (eGFR) is a calculated measure of kidney function that estimates how much blood the kidneys filter per minute. It’s calculated using serum creatinine, age, sex, and race. eGFR provides a standardized way to assess kidney function and stage chronic kidney disease across different populations.
Why is it Tested?
Doctors use eGFR to diagnose and stage chronic kidney disease, monitor kidney function over time, and guide treatment decisions. It’s essential for medication dosing adjustments, determining when to refer to specialists, and planning for kidney replacement therapy. eGFR helps detect kidney disease before symptoms appear.
Normal Ranges
eGFR is categorized into stages based on kidney function:
- Normal: ≥90 mL/min/1.73m² (G1)
- Mild reduction: 60–89 mL/min/1.73m² (G2)
- Moderate: 45–59 mL/min/1.73m² (G3a)
- Moderate-Severe: 30–44 mL/min/1.73m² (G3b)
- Severe: 15–29 mL/min/1.73m² (G4)
Reference ranges vary by authority. Track yours across multiple standards with automatic unit conversions in LabsVault.
What do Abnormal Results Mean?
Abnormal results are not a diagnosis. Always discuss your results with a qualified healthcare provider before making any medical decisions.
Reduced eGFR (60-89)
Mild reduction may indicate:
- Early kidney damage with normal or increased function
- Age-related kidney function decline
- Dehydration or acute illness
- Need for further evaluation if persistent
Low eGFR (<60)
Significantly reduced eGFR indicates chronic kidney disease and may point to:
- Diabetes or high blood pressure complications
- Autoimmune kidney disease
- Genetic kidney disorders
- Need for specialist referral and treatment
How to Track Over Time
eGFR tracking reveals kidney function trends over months and years. A decline of more than 25% or persistent values below 60 mL/min/1.73m² indicate chronic kidney disease requiring management. Regular monitoring helps slow progression and prepare for complications or kidney replacement therapy when needed.
Track your eGFR (Estimated GFR) results over time
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