Sodium (Na)
Sodium is an electrolyte that helps control the amount of fluid in your body. It also helps your nerves and muscles work properly.
Category: Metabolic Panel
Also known as: sodium, na, na+, serum sodium, natrijum
Reference range: 136–145 mEq/L (Source: ABIM)
Standard unit: mEq/L
High values may indicate
High sodium levels (hypernatremia) may indicate dehydration, Cushing syndrome, diabetes insipidus, or excessive salt intake.
Low values may indicate
Low sodium levels (hyponatremia) may indicate excess fluid intake, SIADH, adrenal insufficiency, or use of certain diuretics.
Frequently asked questions
- What is a normal Sodium (Na) level?
- A typical reference range for Sodium (Na) is 136–145 mEq/L (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is Sodium (Na) measured in?
- Sodium (Na) is most commonly reported in mEq/L. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do Sodium (Na) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track Sodium (Na) over time?
- Yes. Upload results from any lab and BloodId charts your Sodium (Na) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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