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Use our GFR calculators to estimate GFR for adults or children.

eGFR Calculator

Pediatric GFR Calculator

Cockcroft-Gault formula (use for drug research only)

Kidney Failure Risk Equation...


GFR as a measure for kidney function

GFR (glomerular filtration rate) is equal to the total of the filtration rates of the functioning nephrons in the kidney. GFR is considered the optimal way to measure kidney function, which in conjunction with albuminuria, can help determine the extent of CKD in an individual. The level of GFR and its magnitude of change over time are vital to:

  • the detection of kidney disease
  • ...
You can go to our website and have the estimated glomerular filtration rate (eGFR) calculated. You need to enter the appropriate information at:
Blog: Ask the Doctor Blog
You can go to our web site and learn this for yourself at:
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Augmentin (Amoxicillin and Clavulanate) can be taken in patient with chronic kidney disease (CKD) and an estimated glomerular filtration rate (eGFR) of 39 milliliters per minute per 1.73 meters squared.  The dose is often reduced in patients with an eGFR of 39.  I recommend that you discuss this with your physician to make sure...
Blog: Ask the Doctor Blog

Use this handy sheet to keep track of your GFR and albuminuria results. After each test, fill in your GFR number and albuminuria result, along with the date you were tested.

What is GFR?
  • GFR stands for "glomerular filtration rate." Your GFR helps you know how much kidney function you have.
  • GFR is estimated from a simple blood test. You...
  • All GFR estimating formulas on this site are designed for use with standardized creatinine and standardized cystatin C values.
    • Standardized creatinine values are traceable to isotope dilution mass spectrometry (IDMS).
    • Standardized cystatin C values are traceable to the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC)/Institute for Reference Materials and Measurements (IRMM) working...
If your estimated glomerular filtration rate (eGFR) is 11 milliliters per minute per 1.73 meters squared and you have chronic kidney disease (CKD), then it is likely not reversible.  If your kidney disease is acute kidney disease, then it may be reversible...
Blog: Ask the Doctor Blog