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HelpTest Code NAPS Sodium, Plasma
Specimen Required
Collection Container/Tube:
Preferred: Light-green top (lithium heparin plasma gel)
Acceptable: Green top (lithium heparin)
Specimen Volume: 0.5 mL
Submission Container/Tube: Plastic vial
Collection Instructions:
1. Plasma gel tubes should be centrifuged within 2 hours of collection.
2. Green-top tubes should be centrifuged, and the plasma aliquoted into a plastic vial within 2 hours of collection.
Useful For
Assessing acid-base balance, water balance, water intoxication, and dehydration
Method Name
Indirect Ion-Selective Electrode (ISE)
Reporting Name
Sodium, PSpecimen Type
Plasma Li HeparinSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma Li Heparin | Refrigerated (preferred) | 14 days |
| Ambient | 14 days |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
Reference Values
<1 year: Not established
≥1 year: 135-145 mmol/L
Day(s) Performed
Monday through Sunday
Report Available
Same day/1 to 2 daysPerforming Laboratory
MCHS- MankatoTest Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.CPT Code Information
84295
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| NAPS | Sodium, P | 2951-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| NAPS | Sodium, P | 2951-2 |