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eGFR (CKD-EPI 2021) Calculator

Estimated glomerular filtration rate using CKD-EPI 2021 equation (race-free)

Calculate eGFR

Clinical use

Use this calculator for estimated glomerular filtration rate using ckd-epi 2021 equation (race-free) in therenal workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.

Interpretation

Race-free equation. G1 ≥90, G2 60-89, G3a 45-59, G3b 30-44, G4 15-29, G5 <15. Use for CKD staging. Less accurate in AKI, extremes of body size, pregnancy.

Required inputs

  • Creatinine
  • Age
  • Sex

Optional: Cysstatin C

Evidence and limitations

This page cites 2 published references. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.

References

  • Inker LA et al. N Engl J Med 2021;385:1737-1749
  • KDIGO 2024 CKD Guideline

Frequently asked questions

What is the eGFR (CKD-EPI 2021)?

eGFR (CKD-EPI 2021) is a clinical calculator used for Estimated glomerular filtration rate using CKD-EPI 2021 equation (race-free).

How do I interpret the eGFR (CKD-EPI 2021)?

Race-free equation. G1 ≥90, G2 60-89, G3a 45-59, G3b 30-44, G4 15-29, G5 <15. Use for CKD staging. Less accurate in AKI, extremes of body size, pregnancy.

What inputs are required for the eGFR (CKD-EPI 2021)?

Required inputs include Creatinine, Age, Sex. Optional inputs include Cysstatin C.

What is the evidence behind the eGFR (CKD-EPI 2021)?

The eGFR (CKD-EPI 2021) page cites Inker LA et al. N Engl J Med 2021;385:1737-1749; KDIGO 2024 CKD Guideline.

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