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DO YOU KNOW WHICH  EQUATION YOUR LAB INFORMATION SYSTEM USES TO CALCULATE GFR?


Laboratories use this calculator to confirm which calculation resides in your Lab Information System.


Compare eGFR results from your LIS to quickly see which equation matches.


Verify your lab's calculation minimum of once per year. 


Click on the links provided on the template to the various on-line calculators.


Click  HERE to download FREE calculator


Note: download to computer before opening file.  Must open with Adobe Acrobat Reader for the calculations to occur. Other default PDF readers may not work - See FAQs -


Your instrument-LIS interface may use extended number of decimal places for the internal eGFR calculation.  Using 2 decimal places when using this calculator will yield a closer match to the LiS calculated value.

SLT_160 eGFR Calculation 3 Equations

References and Resources

eGFR FAQs

National Kidney Foundation


Educational Commentary - Renal Function Testing

API Proficiency

Click to read FAQ's - PDF Calculators must be downloaded first, opened with Adobe Acrobat Reader