Sodium (Na⁺)
Regulates fluid balance and nerve/muscle function. Critically controlled by the kidneys.
Typical normal range
136–145 mEq/L
If high ↑
Hypernatremia: dehydration, diabetes insipidus, excess sodium intake
If low ↓
Hyponatremia: heart failure, SIADH, excessive water intake
What is a normal Sodium level?
A typical reference range is 136–145 mEq/L. Ranges vary between laboratories and can depend on age and sex, so compare your result with the range printed on your own report.
What does a high Sodium level mean?
Hypernatremia: dehydration, diabetes insipidus, excess sodium intake. A single result rarely gives a diagnosis on its own; your doctor will interpret it alongside your symptoms and other tests.
What does a low Sodium level mean?
Hyponatremia: heart failure, SIADH, excessive water intake. Your doctor will interpret it alongside your symptoms and other tests.
About the Metabolic Panel
A metabolic panel checks blood sugar, electrolytes and kidney function. It gives a broad picture of how your body handles energy and balances fluids.
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Medical disclaimer: Reference ranges vary by laboratory, age, sex, and clinical context. This page is for educational purposes only and is not a diagnosis. Always discuss your results with a qualified healthcare professional.