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FENa Calculator
Calculate Fractional Excretion of Sodium (FENa) for AKI differential diagnosis
FENa Formula: $\text{FENa (\%)} = 100 \times \frac{\text{Urine Sodium} \times \text{Serum Creatinine}}{\text{Serum Sodium} \times \text{Urine Creatinine}}$. Enter laboratory values below.
Laboratory Parameters Input
Calculation Results
⚠️ Not medical advice. For nephrology, critical care, and clinical reference only. Acute kidney injury (AKI) evaluation and fluid management must be overseen by a qualified physician or nephrologist.