Calculator: Glomerular filtration rate (GFR) by CKD-EPI equation in adults (conventional and SI units)

Input

Sex	Female
	Male
Age
Serum creatinine

Results

Important: Inputs must be complete to perform calculation.


GFR		mL/min/1.73 m²

Decimal precision

Notes

GFR is estimated by an equation developed by the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI).
Other GFR estimation methods are discussed in UpToDate topic reviews on the assessment of kidney function.

Equations used

GFR = 142 * min(Serum creatinine/kappa, 1)^alpha * max(Serum creatinine/kappa, 1)^-1.2 * 0.9938^Age * SexFactor

Calculation details and variables

For females, the following values are used: SexFactor = 1.012; alpha = -0.241; kappa = 0.7
For males, the following values are used: SexFactor = 1; alpha = -0.302; kappa = 0.9

References

Inker LA, Eneanya ND, Coresh J, et al. Chronic Kidney Disease Epidemiology Collaboration. New Creatinine- and Cystatin C-Based Equations to Estimate GFR without Race. N Engl J Med 2021; 385:1737.

Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.

Topic 15635 Version 17.0

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Calculator: Glomerular filtration rate (GFR) by CKD-EPI equation in adults (conventional and SI units)