The urinary indices are the
fractional sodium excretion (FENa) index and the renal failure index (RFI).
The renal failure index = Urine Sodium * Plasma Creatinine / Urine
Creatinine
Creatinine (; ) is a breakdown product of creatine phosphate from muscle and protein metabolism. It is released at a constant rate by the body (depending on muscle mass).
Biological relevance
Serum creatinine (a blood measurement) is an import ...
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References
Urine tests
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