MDRD Four-Variable Equation GFR Calculator

Calculate eGFR using MDRD4 equation. Less accurate than CKD-EPI but still used in some labs. Underestimates GFR >60 mL/min.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
Advertisement

How It Works

Calculate eGFR using MDRD4 equation. Less accurate than CKD-EPI but still used in some labs. Underestimates GFR >60 mL/min

Each component has a specific meaning:

  • MDRD4 equation — The mdrd4 equation recorded for the scenario being assessed.

Note: Interpret the mdrd egfr result against the thresholds and context described above.

How to Use

Enter the MDRD4 equation for the scenario you are assessing. Calculate eGFR using MDRD4 equation. Less accurate than CKD-EPI but still used in some labs. Underestimates GFR >60 mL/min. Use the mdrd egfr result to inform your calculation.

Related Calculators

CKD-EPI 2021

Medical Ultra-depth

CKD-EPI Combined

Medical Ultra-depth

Frequently Asked Questions