Question 1

What is eGFR?

Accepted Answer

eGFR (estimated Glomerular Filtration Rate) is a measure of kidney function that estimates how much blood passes through the glomeruli (tiny filters in the kidneys) each minute. It is calculated using equations that consider factors like age, sex, and serum creatinine levels.

Question 2

Which eGFR equation should I use?

Accepted Answer

The CKD-EPI 2021 equation is currently recommended for adults as it removes race from the calculation. For pediatric patients, use the Schwartz equation or CKD-EPI Pediatric. The choice depends on patient age, available biomarkers (creatinine, cystatin C), and clinical context.

Question 3

What is a normal eGFR?

Accepted Answer

A normal eGFR is typically 90 mL/min/1.73m² or higher. Values between 60-89 may indicate mild kidney disease, 30-59 indicate moderate kidney disease, 15-29 indicate severe kidney disease, and below 15 indicates kidney failure.

Question 4

How accurate is the eGFR calculator?

Accepted Answer

Our eGFR calculator uses validated medical equations including CKD-EPI 2021, CKD-EPI 2009, MDRD, and Cockcroft-Gault. These equations have been extensively validated in clinical studies and are widely used in medical practice. However, eGFR is an estimate and should be interpreted by healthcare professionals in clinical context.

Question 5

What is the difference between CKD-EPI 2021 and CKD-EPI 2009?

Accepted Answer

The CKD-EPI 2021 equation removes race as a variable, making it more equitable. It was developed to address concerns about race-based medicine. The 2009 version included a race coefficient that adjusted results for Black patients. Current guidelines recommend using the 2021 version.

Question 6

Can I use this calculator for pediatric patients?

Accepted Answer

Yes, the calculator includes pediatric equations such as the Schwartz equation and CKD-EPI Pediatric equation for patients under 18 years old. Make sure to select the appropriate equation based on the patient's age.

eGFR Calculator

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