Nephrology · Internal Medicine
Fractional Excretion of Sodium (Espinel) calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
Complete all required inputs to calculate the score.
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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