Test Code 1021
Test Details
Sodium
Sodium is an electrolyte present in all body fluids and is vital to normal body function, including nerve and muscle function. It helps cells function normally and helps regulate the amount of fluid in the body.
Methodology
Ion Selective Electrode (ISE)
Patient Preparation
None
Preferred Specimen
1.0 mL serum (0.5 mL minimum) collected in serum separator tube (SST/Tiger Top)
Transport Temperature
Refrigerated (ship on frozen cold packs)
Stability
Refrigerated: 14 days
Lab Values
Sodium
- Low: <135 mmol/L
- Normal: 135-146 mmol/L
- High: >146 mmol/L
- Alert: ≤120 or ≥160 mmol/L
Clinical Significance
Sodium
- May be used to detect the cause and help monitor treatment plan for patients with abnormal levels.
- Elevated levels of sodium could indicate hypernatremia or dehydration.
- Low levels could indicate hyponatremia, fluid retention or too much water intake.
Treatment Options
Sodium
Assess etiology of elevation such as dehydration, vomiting, medications, and kidney problems that may be results of abnormal electrolyte imbalance.
