Diagnostic Performance of Fractional Excretion of Sodium for the Differential Diagnosis of Acute Kidney Injury: A Systematic Review and Meta-Analysis.
Mohammad O AbdelhafezTarek NayfehAnwar AtiehOmar AbuShammaBasheer BabaaMuath A BaniowdaAlaa HrizatBashar HasanLeslie HassettAbdurrahman HamadahKamel GharaibehPublished in: Clinical journal of the American Society of Nephrology : CJASN (2022)
Fractional excretion of sodium has a limited role for AKI differentiation in patients with a history of CKD or those on diuretic therapy. It is most valuable when oliguria is present.