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Test ID NAS Sodium, Serum


Necessary Information


Patient's age and sex are required.



Specimen Required


Container/Tube: 

Preferred: Serum gel

Acceptable: Red top

Specimen Volume: 0.5 mL

Collection Instructions:

1. Serum gel tubes should be centrifuged within 2 hours of collection.

2. Red-top tubes should be centrifuged and aliquoted within 2 hours of collection.


Useful For

Assessing acid-base balance, water balance, water intoxication, and dehydration

Method Name

Potentiometric, Indirect Ion-Selective Electrode

Reporting Name

Sodium, S

Specimen Type

Serum

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Refrigerated (preferred) 14 days
  Ambient  14 days

Reference Values

<1 year: not established

≥1 year: 135-145 mmol/L

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared or approved by the U.S. 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
NAS Sodium, S 2951-2

 

Result ID Test Result Name Result LOINC Value
NAS Sodium, S 2951-2

NY State Approved

Yes