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SODIUM
Test CodeLAB122
CPT Codes
84295
Preferred Specimen
One 4.5 mL light green top tube
Pediatric: One light green top microtainer
Pediatric: One light green top microtainer
Other Acceptable Specimens
Red top or gold top tube
Instructions
Collect in green top tube containing lithium heparin, not sodium heparin.
Sample must be centrifuged within two hours of collection. Serum/plasma must be removed from the red cells and put into aliquot tubes following centrifugation.
Sample must be centrifuged within two hours of collection. Serum/plasma must be removed from the red cells and put into aliquot tubes following centrifugation.
Transport Temperature
Refrigerated
Specimen Stability
Centrifuge within 2 hours of collection
Ambient: 2 weeks
Refrigerated: 2 weeks
Frozen: 1 year
Ambient: 2 weeks
Refrigerated: 2 weeks
Frozen: 1 year
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens collected in tubes containing sodium heparin will not be analyzed.
Methodology
Ion Selective Electrode (ISE) Indirect
Setup Schedule
Sunday-Saturday
Reference Range
Therapeutic level: 136-145 mmol/L
Critical level: ≤120 mmol/L or ≥160 mmol/L
Critical level: ≤120 mmol/L or ≥160 mmol/L
Performing Laboratory
West Virginia University Hospital, Inc.
Bluefield Pavilion Campus Berkeley Medical Center Barnesville Hospital Braxton County Memorial Camden Clark Medical Center Camden Clark Medical Center Fairmont Medical Center Garrett Regional Medical Center Harrison Community Hospital Jackson General Hospital Jefferson Medical Center Princeton Community Hospital Potomac Valley Hospital Reynolds Memorial Hospital Summersville Regional Medical Center St. Joseph’s Hospital United Hospital Center Uniontown Hospital Wetzel County Hospital Wheeling Hospital
