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Male urinary system

Overview Risks Results

Fractional excretion of sodium

Alternative Names: FE sodium; FENa What the risks are: The urine sample has no risk. The risks of drawing blood include: Excessive bleeding Fainting or feeling light-headed Hematoma (blood accumulating under the skin) Infection (a slight risk any time the skin is broken) Multiple punctures to locate veins Special considerations: The test is only of value in specific circumstances, such as sudden reduced urine output. Use of diuretic medicines before performing the tests may give misleading results.

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