Evaluation of renal function: choosing the right equation
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Abstract
The article presents examples of the difference in estimated GFR (eGFR) results obtained using different CKD-EPI creatinine equations (2009) and (2021). In these examples, the results were not reclassified to a higher level of renal function, but the eGFR obtained remained within the same CKD stage despite the different equations. However, it should be borne in mind that a significant reclassification to higher eGFR categories may have undesirable consequences, such as changes in the composition of the CKD population and for initiation of renoprotection measures, dosing and discontinuation of certain medications, timely referral to a nephrologist and RRT planning.
The article presents validated eGFR estimating equations according to the KDIGO 2024 Guidelines for the Evaluation and Management of CKD (CKD-EPI creatinine equation (2009), CKD-EPI creatinine equation (2021), CKD-EPI creatinine-cystatin C equation (2021), EKFC equation et al.), as well as eGFR calculators available on the National Kidney Foundation (NKF) website.
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References
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