GFR Calculator

Calculate Your GFR

Serum Creatinine

Cystatin C (optional, mg/L)

Age (years)

Gender

The following are the GFR results based on different formulas:

Formula	Result
CKD-EPI 2021
MDRD
CKD-EPI Creatinine-Cystatin C

Stage	GFR Value (mL/min/1.73 m²)
Normal	90+ or above and no proteinuria
CKD1	90+ with evidence of kidney damage
CKD2 (Mild)	60 to 89 with evidence of kidney damage
CKD3 (Moderate)	30 to 59
CKD4 (Severe)	15 to 29
CKD5 (Kidney failure)	Less than 15

References: National Kidney Foundation CKD-EPI Creatinine Equation (2021). Learn more.

Disclaimer: This tool is for educational purposes only and not a substitute for professional medical advice.

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