Sodium
Testing Information
Sample Type
Serum
Test Codes
630320
CPT Code
84295
Testing Area
Core Lab - Chemistry
Test Methodology
Abbott Alinity - Potentiometry
Reference Range
0-11 months: 135-150 mmol/L1 year-12 years: 138-145 mmol/L>13 years: 135-145 mmol/LCritical Value:1 year-12 years: <125, >155 mmol/L>12 years: <120, >160 mmol/L
Expected Turnaround Time
Results Available 24 hours from Receipt
Specimen Collection Criteria
Collect one gold top SST tube (minimum whole blood: 4 mL). Let specimen clot for 30-60 minutes and then centrifuge to separate serum from cells. Refrigerate after centrifugation.
Rejection Criteria
Grossly hemolyzed specimens, quantity not sufficient, improperly labeled
Specimen Validity and Retention
Centrifuged SST Tubes:Room Temperature (20-25°C): 2-4 hoursRefrigerated (2-8°C): 7 daysFrozen (-20°C or greater): UnacceptableSerum Aliquots:Room Temperature (20-25°C): 2-4 hoursRefrigerated (2-8°C): 7 daysFrozen (-20°C or greater): 7 daysSpecimens retained for 7 days after testing
Courier Transportation
Transport centrifuged tube refrigerated (2-8°C)
Clinical Utility
Sodium assays are used to monitor electrolyte balance.
