CKD Staging & Referral (KDIGO) — free guideline decision tool
KDIGO heat-map risk stratification (eGFR stage × albuminuria stage), follow-up frequency and nephrology referral advice for CKD. Instant, browser-side.
Open guideline tool →Guideline-based
Implements the decision logic from published clinical guidelines.
Runs in your browser
No installation. Enter the patient's values and get a guideline recommendation instantly.
Data stays local
Nothing is uploaded. Results are for licensed clinicians only.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| eGFR | 45 mL/min/1.73m² |
|---|---|
| Urine albumin/creatinine ratio (ACR) | 250 mg/g |
→CKD risk stratumHigh risk
- Stage：G3a A2
- eGFR stage：G3a (45–59)
- Albuminuria stage：A2 (30–300 mg/g)
Common questions
What is CKD Staging & Referral (KDIGO)?
KDIGO heat-map risk stratification (eGFR stage × albuminuria stage), follow-up frequency and nephrology referral advice for CKD. Instant, browser-side.
How is CKD Staging & Referral (KDIGO) calculated? What is the core formula?
eGFR stages G1–G5 × albuminuria A1 (< 30), A2 (30–300), A3 (> 300 mg/g) → low/moderate/high/very-high risk per the KDIGO grid.
When is CKD Staging & Referral (KDIGO) used?
Stage CKD and decide on follow-up intensity and referral; the diagnosis requires abnormalities to persist ≥ 3 months.
What are the key clinical points for CKD Staging & Referral (KDIGO)?
Refer to nephrology for eGFR < 30, A3 albuminuria or very-high risk. Also refer for rapidly falling eGFR, resistant hypertension or unexplained anaemia. CKD requires abnormalities to persist ≥ 3 months. G1–G2 with A1 needs another marker of kidney damage to diagnose CKD.
What are the limits and cautions when using CKD Staging & Referral (KDIGO)?
For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
How is CKD Staging & Referral (KDIGO) calculated in practice? Can you show a worked example?
Inputs: eGFR 45 mL/min/1.73m², Urine albumin/creatinine ratio (ACR) 250 mg/g → Result: CKD risk stratum High risk（Stage: G3a A2, eGFR stage: G3a (45–59), Albuminuria stage: A2 (30–300 mg/g)）
Run CKD Staging & Referral (KDIGO) now
KDIGO heat-map risk stratification (eGFR stage × albuminuria stage), follow-up frequency and nephrology referral advice for CKD. Instant, browser-side.
Open guideline tool →For licensed clinicians. Not a substitute for clinical judgement.
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