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Interpret Your Sodium Results

Enter your Na value below and get an instant, free AI interpretation — a plain-English explanation checked against WHO/IFCC reference ranges.

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This AI-generated interpretation is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Results may vary based on individual health factors not captured here.

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Sodium Normal Ranges

Sodium is the primary extracellular cation and the main determinant of blood osmolality (tonicity).

Reference RangeUnitNotes
136 – 145mEq/L

Also reported in: mmol/L.

Critical (Panic) Values

Critical Low: < 120 mEq/L. Critical High: > 160 mEq/L. Values outside these limits require immediate clinical attention.

Common Causes of High Na

Dehydration (insufficient water intake, especially in elderly)Diabetes insipidus (central or nephrogenic — ADH deficiency or resistance)Excessive sweating without water replacement

Common Causes of Low Na

SIADH (syndrome of inappropriate ADH secretion) — most common in hospitalHeart failure (dilutional hyponatremia)Liver cirrhosis (dilutional hyponatremia)

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Reference ranges, causes, symptoms, preparation, and FAQs.

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