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CPE-003 · GFR estimation
GFR-002: Prefer combined eGFR when cystatin C is available
Prefer combined eGFR when cystatin C is available. Evaluates eGFRcr 2021 present.
Active rulePriority 51Kidney engine v1.2.0
Condition
- All of:
- eGFRcr 2021 present
- cystatin c mg l present
What it reports
- Computed feature: eGFRcr_cys_2021
- Selected gfr for classification: eGFRcr_cys_2021
- Message: Combined creatinine-cystatin C estimate used for classification; both marker results remain visible.
Evidence
- R1KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Disease: Improving Global Outcomes (KDIGO), 2024.Supports: CKD definition and chronicity CGA classification albuminuria confirmation risk prediction referral medication stewardship progression monitoring
- R3eGFR Equations for Adults: 2021 CKD-EPI creatinine and creatinine-cystatin C race-free equations. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) / NIH, 2026.Supports: eGFRcr computation eGFRcr-cys computation assay standardization adult eligibility
Cases where this rule fires
Open a case to see this rule fire with real inputs, then change the values until it stops.
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