Nephrology · Internal Medicine
Fractional Excretion of Sodium (Espinel) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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Formula inputs
- Urine sodium (mmol/L)Accepted range: 0 to 1000
- Plasma sodium (mmol/L)Accepted range: 1 to 250
- Urine creatinine (mg/dL)Accepted range: 0.1 to 1000
- Plasma creatinine (mg/dL)Accepted range: 0.1 to 30
Primary source
Espinel CH. The FENa test: use in the differential diagnosis of acute renal failure. JAMA (1976)
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