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Informational · does not replace consultation with a healthcare professional.
FENa
Fractional excretion of sodium — separates prerenal from intrinsic AKI.
Clinician
Patient
Urine sodium (mEq/L)
Plasma sodium (mEq/L)
Urine creatinine (mg/dL)
Plasma creatinine (mg/dL)
Calculate
Reset
References
Espinel CH. The FENa test: use in the differential diagnosis of acute renal failure. JAMA. 1976;236(6):579-581.
PMID:947239