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GFR Calculator

Glomerular Filtration Rate

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How It Works

The GFR (glomerular filtration rate) Calculator estimates GFR values based on factors including serum creatinine value, age, race, and gender.

Glomerular filtration rate describes the rate of flow of filtered fluids through the kidney and is used as a measure of kidney function. Generally, a higher value of GFR indicates better kidney function.

The most accurate way to determine GFR involves the measurement of the rate at which an external substance such as inulin is removed from the bloodstream, termed inulin clearance.

A GFR above 60 mL/min/1.73m2 is usually adequate for most patients and alone is not necessarily indicative of a patient having chronic kidney disease (CKD).

Results

Enter values to see results

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Quick Tips

  • • Results update automatically as you type
  • • Use Tab to navigate between fields
  • • Press Enter to calculate

Frequently Asked Questions

How does the GFR Calculator work?
Simply enter your values into the input fields above. The GFR Calculator uses standard formulas to compute results instantly as you type or click.
Is the GFR Calculator free?
Yes, this calculator is completely free to use. No registration, no hidden fees, no limits.
How accurate are the results?
Results are computed using industry-standard mathematical formulas. For critical decisions, we recommend consulting a professional.
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