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Mayo Clinic Laboratories

Test Code Sodium Sodium

Abbrev

NA

Storage Temperature

R (2-8ºC)

ASTM/HL7/SDF 1

SQ=NA

EPIC=LAB122

Instrument/Location

Beckman DXC 700 AU

Specimen Requirements

Specimen
Type:
 Serum or Plasma (Lithium Heparin)

 

Container/Tube
Type:
 Gold Top or Lt. Green Top.

 

Collection
Instructions:
 Draw tube and label appropriately.
Allow Gold top tubes to clot for 30 minutes. Spin tubes within
2
hours.

 

Note: Hemolyzed Specimens
are
not acceptable.

Specimen Transport Temperature

Spun tube/Refrigerated

Reference Values

136-145 mmol/L

 

Critical Values: <120 mmol/L or >155 mmol/L

Methodology

Indirect Potentiometry

Specimen stability/Retention time

7 days refrigerated