KDIGO CKD Staging (G×A risk)
KDIGO CKD staging: G-stage by eGFR and A-stage by UACR (or a direct albuminuria category) mapped to the heat-map risk color (KDIGO 2024).
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- eGFR
- 38 mL/min/1.73m^2
- Urine albumin-to-creatinine ratio
- 340 mg/g
Result: KDIGO G3b/A3: very high risk (red).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- GFR category
- G1 >= 90, G2 60-89, G3a 45-59, G3b 30-44, G4 15-29, G5 < 15 (mL/min/1.73m²).
- Albuminuria category
- A1 < 30, A2 30-300, A3 > 300 mg/g UACR.
- Risk cell
- The cell color (green low / yellow moderate / orange high / red very high) is the KDIGO prognosis; confirm over >= 3 months for CKD.
What you enter
- eGFR
- Urine albumin-to-creatinine ratio
- Albuminuria category (use only if no UACR)
How this is calculated
KDIGO 2024 Clinical Practice Guideline for the Evaluation and Management of Chronic Kidney Disease. Kidney Int. 2024;105(4S):S117-S314. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.
More in Nephrology and acid-base.