What does "Serum sodium" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
Serum sodium refers to the amount of sodium in a person's blood. Sodium is a mineral that is essential for the body to function properly, as it helps control blood pressure and fluid balance. A serum sodium test is often part of a routine blood test to check a person's overall health or to diagnose a medical condition. Too much or too little sodium in the blood can indicate a variety of health problems.
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