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Sodium (Na)

Also known as: Na+
Formal name: Sodium
Related tests: Chloride, Bicarbonate (or total CO2), Potassium, Electrolytes, Osmolality, BMP, CMP, Aldosterone, ADH

 

  • Why should I do it?

To determine whether your sodium concentration is within normal limits and to help evaluate electrolyte balance and kidney function; to monitor chronic or acute hypernatremia or hyponatremia

 

  • When should I do it?

If you are experiencing dehydration or edema; also to monitor certain chronic conditions, like high or low blood pressure

 

  • What Kind of Sample is Needed?

A blood sample drawn from a vein in the arm or, in some cases, a 24-hour urine sample

 

  • Test Preparation Needed?