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Clinical Calculator
Nephrology V1.0
CKD-EPI
2021
Estimated Glomerular Filtration Rate (eGFR) — Race-Free Equation
Primary Reference
Inker LA, et al.
N Engl J Med 2021; 385:1737–1749
Patient Parameters
1. Sex
Male
Female
2. Age (Years)
Valid range: 18 – 90 years
3. Serum Creatinine
mg/dL
µmol/L
Fasting sample preferred. Enzymatic assay (IDMS-traceable).
4. Known CKD Risk Factors
No additional risk factors
Diabetes (Type 1 or 2)
Hypertension
Diabetes + Hypertension
Family history of CKD
Affects clinical staging recommendations
Calculate eGFR
Analysis Required
Enter patient parameters to calculate
estimated glomerular filtration rate.
—
mL/min/1.73 m²
CKD Staging
—
—
G1 ≥90
G2 60–89
G3a 45–59
G3b 30–44
G4 15–29
G5 <15
CKD Stage
—
Kidney Function
—
Computation Details
Clinical Implication
—
References & Original Research
↕ Hover to expand
1
Inker LA, et al.
New Creatinine- and Cystatin C–Based Equations to Estimate GFR without Race.
N Engl J Med 2021;385:1737–1749.
View ↗
2
KDIGO 2024 Clinical Practice Guideline for CKD.
Evaluation and Management of Chronic Kidney Disease.
Kidney Int 2024;105(4S).
View ↗
3
Levey AS, et al.
A New Equation to Estimate Glomerular Filtration Rate.
Ann Intern Med 2009;150:604–612.
View ↗
4
National Kidney Foundation.
eGFR Calculator and CKD Staging Resources.
Visit ↗