Sodium (Na) in Urine

Urinary Sodium

Results

A test for sodium in the urine is a 24-hour test or a one-time (spot) test that checks how much sodium is in the urine. Sodium is both an electrolyte and a mineral.

Normal

Normal results may vary from lab to lab. Results are ready in 1 day.

Sodium in 24-hour urine collection

Normal:	40–220 milliequivalents (mEq)/day or 40–220 millimoles (mmol) (SI units)

Sodium in one-time urine sample

Normal:	Greater than 20 milliequivalents per liter (mEq/L)

Many conditions can affect sodium levels. Your doctor will talk with you about any abnormal results that may be related to your symptoms and medical history.

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Author:	Jan Nissl, RN, BS	Last Updated: November 17, 2006
Medical Review:	Martin Gabica, MD - Family Medicine Avery L. Seifert, MD - Urology
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