Test Code NA Sodium
Additional Codes
Epic: LAB122
Specimen Required
Specimen Type: Serum
Collection Container/Type
Preferred: Serum gel
Acceptable: Green top (Lithium heparin)
Submission Container/Tube: Plastic vial
Specimen Volume: 3.5 mL
Collection Instructions: Centrifuge and separate cells after clot formation and within 4 hours of collection.
Specimen Minimum Volume
0.5 mL
Specimen Stability
Room temperature: 14 days
Refrigerated: 14 days
Frozen: 1 year
Reference Range
0 – 1 week: |
133 – 146 mEg/L |
1 week – 150 years: |
136 – 145 mEg/L |
Rejection Due To
Unlabeled, mislabeled, wrong tube type, QNS, Hemolysis index >400, gross lipemia.
Report Available
Same day
Clinical Significance
Sodium is the major cation of extracellular fluid; it plays an essential role in the normal distribution of water and in the maintenance of osmotic pressure in extracellular fluid compartments. Decreased levels of Na+ may be caused by an excessive use of diuretics, prolonged vomiting, a decrease in the intake of sodium in the diet, and metabolic acidosis. Increased levels of Na+ may be found in Cushing’s syndrome, severe dehydration, or in high levels of salt intake without an adequate supply of water.
Method Name
Indirect Ion-Selective Electrode (diluted)
(ICT = Integrated Chip Technology)
Day(s) Performed
Daily
LOINC
2075-0