Preferred Specimen(s) 1 mL serum
Transport Container Plastic screw-cap vial
Transport Temperature
- Ambient 5 days,
- Refrigerated 14 days
Reject Criteria
- Gross hemolysis
- Anticoagulants other than heparin
Methodology Ion Selective Electrode (ISE)
Clinical Significance Sodium measurements are useful in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison’s disease, dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance.