Electrolytes
Sodium
A major electrolyte that helps regulate fluid balance and nerve function.
electrolyteskidneyhearthormones
About this biomarker
Sodium is one of the body's main electrolytes. It plays a central role in fluid balance, blood pressure, and nerve and muscle function.
Why it matters
Abnormal sodium levels can reflect hydration problems, hormone issues, kidney problems, or other serious conditions.
What lower levels may suggest
Low sodium may be seen with excess water retention, certain medications, hormone problems, heart failure, or kidney disease.
What higher levels may suggest
High sodium often reflects water loss, dehydration, or impaired fluid regulation.
Common tests
Basic metabolic panel, comprehensive metabolic panel, electrolyte panel
Related biomarkers
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