Biomarker category
Electrolytes
Sodium, potassium, chloride, and CO₂ (bicarbonate) balance markers.
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Sodium
Sodium is an electrolyte that helps regulate fluid balance and is part of most metabolic panels.
Potassium
Potassium is an electrolyte important for muscle and nerve function, included on metabolic panels.
Chloride
Chloride is an electrolyte that helps maintain fluid balance and is reported on metabolic panels.
CO2 (bicarbonate)
This test estimates bicarbonate, part of the body's acid-base balance, and is part of metabolic panels.