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Test Code NA Sodium

Useful For

Assessing acid-base balance, water balance, and osmotic pressure.

Specimen Information

Obtain specimen using standard phlebotomy techniques.

No special patient preparation is necessary.

Avoid using benzalkonium chloride when preparing for sample collection as this has been shown to increase sodium concentrations by approximately 20 mmol/L

 

Container Specimen Temperature Collect Vol Submit Vol Min Vol Stability
SST Serum Refrigerate 4.0 mL 1.0 mL 0.6 mL 7 days
Lithium Heparin Plasma Refrigerate 4.0 mL 1.0 mL 0.6 mL 7 days

Reject Due To:

- Moderate or Marked Hemolysis

- Specimen unlabeled or mislabeled

Reference Range

Male and Female: 137 - 145 mmol/L

 

Critical Value(s): <120 or >155 mmol/L

Test Schedule / Analytical Time / Test Priority

Daily / Same Day / Available STAT

Instrumentation / Method

Ortho Vitros XT 7600 / Ion Selective Electrode

CPT / LOINC / Order Code

Meditech Medent LOINC CPT
NAS NAS 2951-2 84295