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Urine & CSF

Sodium (24-h urine) unit converter

Sodium excreted in 24-hour urine (varies widely with intake)

Also known as: Urine sodium, 24-hour urine sodium, Urinary sodium excretion, UNa, Natriuresis, Natriurese

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Reference range

UnitAdults
mmol/24 h = mEq/24 h40 – 220

Source: MedlinePlus (NLM): Sodium urine test · Last reviewed: 2026-10-14

Note from the source: 40-220 mEq (= mmol) per day for adults; depends strongly on salt intake (MedlinePlus)

Frequently asked questions

What is the reference range of Sodium (24-h urine)?

For adults the range is 40 – 220 mmol/24 h (MedlinePlus (NLM): Sodium urine test). Reference ranges differ between laboratories and partly by sex and age; use the range printed on your lab report.

Which units are used for Sodium (24-h urine)?

Common units are mmol/24 h.

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