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AKI Staging (KDIGO)

AKI Staging

KDIGO 2012 Selection

Creatinine Metrics

Baseline Cr (mg/dL)

Current Cr (mg/dL)

Urine Output Dynamics (Optional)

Urine Output (mL)

Weight (kg)

Observation Period

Stage is defined by the higher of creatinine or UO criteria.

Dynamic Staging

Enter creatinine and urine output dynamics to execute KDIGO diagnostic staging.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Any patient with a rise in serum creatinine or fall in urine output, regardless of setting.

Acute illness in pre-existing CKD ("acute-on-chronic" kidney disease).

Post-operative renal monitoring (cardiac surgery, liver transplant, major vascular cases).

ICU patients: universal AKI screening is recommended every 24 hours.

Following exposure to nephrotoxins: contrast, aminoglycosides, NSAIDs, cisplatin.

KDIGO AKI Definition

AKI is defined as any of: (1) Rise in creatinine ≥ 0.3 mg/dL within 48 hours, (2) Rise in creatinine ≥ 1.5× baseline within 7 days, or (3) Urine output < 0.5 mL/kg/hr for ≥ 6 consecutive hours.

Related Scores in Practice

In clinical practice, this assessment is frequently evaluated alongside other validated measures. Depending on the patient's presentation and specific diagnostic requirements, you may also need to utilize the FENa, FEUrea, Urinary Anion Gap or the Egfr Calc to formulate a comprehensive care plan.

Last Comprehensive Review: 2026

Related Nephrology Tools

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KFRE — Kidney Failure Risk

FENa

Electrolyte & Free Water

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In Recent Clinical News

Scanning Medical Journals

No new significant updates or guidelines matching this topic were found today. We will check again soon.