Sodium

also known as Na

NORMAL_RANGE
136 – 145 mEq/L
UNIT
mEq/L

/WHAT_IT_IS

Sodium is the primary extracellular electrolyte. Tightly regulated; abnormalities usually reflect water balance, not sodium intake per se.

/NORMAL_RANGE

Reference: 136–145 mEq/L.

What does high Na mean?

  • +Dehydration, diabetes insipidus.

What does low Na mean?

  • +Excessive water intake, SIADH, adrenal insufficiency, some medications.

/ON_TRT

Not affected by TRT.

/RELATED

/TRACK_THIS

Track Na in the app.

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Last reviewed: 2026-06-04 · MyTRT does not provide medical advice. Always consult your physician.