Kidney Function (eGFR) Calculator
Estimate kidney performance using eGFR levels.
Calculate Your eGFR
Introduction
The estimated Glomerular Filtration Rate (eGFR) is a key indicator of kidney function. This calculator uses the CKD-EPI 2021 equation to estimate your eGFR based on your serum creatinine level, age, and gender. It's a crucial tool for early detection of kidney disease.
How Our eGFR Calculator Can Help You
This calculator provides a quick and easy way to understand the results of a routine blood test. Chronic Kidney Disease (CKD) often has no symptoms in its early stages, so an eGFR calculation can be an important first alert. By inputting your lab results, you can see where your kidney function falls on the spectrum, from normal to kidney failure. This can empower you to have more informed discussions with your healthcare provider about your kidney health, especially if you have risk factors like diabetes, high blood pressure, or a family history of kidney disease.
How It Works
The calculator uses the 2021 CKD-EPI Creatinine Equation, which is the latest standard for estimating GFR. It takes your serum creatinine level (a waste product in your blood), your age, gender, and race as inputs. The complex formula then calculates an estimate of how many milliliters of blood your kidneys are filtering per minute. The result is then categorized into one of the five stages of Chronic Kidney Disease, providing a clear indication of kidney health.
Features of Our eGFR Calculator
Our calculator uses the most up-to-date, clinically recommended formula (CKD-EPI 2021) for accuracy. The interface is simple, requiring only the inputs from a standard metabolic panel blood test. The results are color-coded and provide the specific stage of CKD, making them easy to interpret. This tool is for informational purposes and is designed to help you understand your health data, not to replace a doctor's diagnosis. All calculations are private and performed in your browser.
Important Disclaimer
All these tools provide estimates for informational and educational purposes only. They are not a substitute for professional medical advice, diagnosis, or treatment. Users should always consult with a qualified healthcare provider for any health concerns. This tool requires results from a blood test and should be interpreted by a medical professional.
FAQs About Our eGFR Calculator
Where do I get my serum creatinine level?
This is a value from a routine blood test called a Basic or Comprehensive Metabolic Panel, which your doctor can order.
What is a normal eGFR?
A normal eGFR is typically 90 or above. However, it's normal for eGFR to decrease slightly with age. Your doctor can tell you what's normal for you.
Why does the calculation use race?
Older formulas included a race-based adjustment. The newest 2021 formula we use has removed this, but we include the option for comparison with older results. It's a topic of ongoing medical discussion.
What should I do if my eGFR is low?
Do not panic. A single reading can be affected by many factors. The most important step is to discuss the result with your healthcare provider, who can interpret it in the context of your overall health and order further tests if needed.