GFR Calculator Glomerular Filtration Rate DaVita

DaVita GFR Calculator Using CKD-EPI 2021:

\[ eGFR = 142 \times \min(Scr/\kappa, 1)^\alpha \times \max(Scr/\kappa, 1)^{-1.200} \times 0.9938^{age} \times (1.012 \text{ if female}) \]

Estimated GFR (eGFR):

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1. What Is The GFR Calculator Glomerular Filtration Rate DaVita?

The DaVita GFR Calculator using CKD-EPI 2021 equation estimates glomerular filtration rate (GFR) from serum creatinine, age, and sex. This updated version provides enhanced accuracy in kidney function assessment compared to previous equations.

2. How Does The Calculator Work?

The calculator uses the DaVita CKD-EPI 2021 equation:

\[ eGFR = 142 \times \min(Scr/\kappa, 1)^\alpha \times \max(Scr/\kappa, 1)^{-1.200} \times 0.9938^{age} \times (1.012 \text{ if female}) \]

Where:

\( Scr \) — Serum creatinine (mg/dL)
\( \kappa \) — 0.7 (female) or 0.9 (male)
\( \alpha \) — -0.241 (female) or -0.302 (male)
\( age \) — Age in years
1.012 — Female multiplier

Explanation: This equation incorporates refined coefficients for improved accuracy across different demographic groups and GFR ranges.

3. Importance Of eGFR Calculation

Details: Accurate GFR estimation is essential for diagnosing kidney disease stages, monitoring disease progression, and determining appropriate treatment plans and medication adjustments.

4. Using The Calculator

Tips: Enter serum creatinine in mg/dL, age in years, and select gender. Ensure all values are valid (creatinine > 0, age between 1-120 years) for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What Makes The DaVita CKD-EPI 2021 Different?
A: This version uses updated coefficients (142, -1.200, 0.9938) and refined gender adjustments for improved accuracy in modern populations.

Q2: What Are Normal eGFR Values?
A: Normal GFR is typically ≥90 mL/min/1.73m². Values below 60 mL/min/1.73m² persisting for 3+ months indicate chronic kidney disease.

Q3: When Should Creatinine Be Measured?
A: Morning fasting samples are preferred, but random samples are acceptable. Avoid testing after high-protein meals or strenuous exercise.

Q4: Are There Limitations To This Equation?
A: Accuracy may be reduced in extreme age groups, amputees, pregnant women, individuals with unusual muscle mass, or those with rapidly changing kidney function.

Q5: Can This Calculator Be Used For Medication Dosing?
A: While useful for general assessment, precise medication dosing may require measured GFR in specific clinical situations or high-risk populations.