KDIGO chronic kidney disease staging
Combines glomerular filtration rate and albuminuria to classify chronic kidney disease and estimate progression, cardiovascular-event and mortality risk, as in the KDIGO heatmap.
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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.
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Method · Limits of application
KDIGO 2024: CGA, 6 GFR categories (G3a/b) × 3 albuminuria categories, heatmap; no standalone diagnosis
The classification presupposes chronic kidney disease established by structural or functional kidney abnormalities persisting for at least 3 months. Without other evidence of kidney damage, G1 and G2 do not establish CKD. A single abnormal eGFR or albumin-to-creatinine ratio does not confirm chronicity. The G/A map presents population risk categories, not an individual probability or an automatic indication for treatment. In newborns with clearly established kidney disease, such as severe congenital malformations of the kidneys and urinary tract, KDIGO notes that waiting 3 months to confirm CKD is not necessary. KDIGO 2024: Table 3 lists A2 as 30–300 mg/g and A3 as > 300 mg/g; Figure 13 lists A2 as 30–299 mg/g and A3 as ≥ 300 mg/g. This tool uses Table 3 for albuminuria categories. The exact value of 300 mg/g is excluded from the verification of monitoring frequency in Figure 13; the discrepancy between the source documents requires review.
Conditions of use
Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.
Documented parameters
- Estimated (or measured) GFR · mL/min/1.73 m²
- Urine albumin-to-creatinine ratio (ACR) · mg/g
4/4 reference cases checked. Numerical tests are not clinical validation.
Relationship with cancer research
General context — relationship to be defined
A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.