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*SODIUM, BLOOD

Mnemonic

NA

Synonym

Na+ - Serum Sodium Cation - Serum Sodium Electrolyte

Specimen Collection Requirements

Collect

Serum or Plasma, one 5.0 mL gold (SST), 7.0 mL red or 3.0 mL mint green (lithium heparin, PST) top tube

Handling

Allow serum to clot completely at room temperature (minimum: 30 minutes). Preferably, separate serum or plasma from cells before transport.

Preferred Volume

1.0 mL

Minimum Volume

0.25 mL Serum/Plasma, (Whole Blood 0.60 mL minimum draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed specimens

Stability

AFTER SEPARATION FROM CELLS: Ambient (18-26°C): 4 days; Refrigerated (2-8°C): 7 days; Frozen (at or below -20°C): 1 month

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Ion Selective Electrode

Reference Values

Reference Values

Critical Values

CPT Codes

84295

Last Updated: Thursday, November 9, 2017 01:14:57 PM


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