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Test Code N.SODIUM SODIUM

Important Note

Avoid hemolysis.

Additional Codes

NA.

SODIUM.

Methodology

Automated Chemistry Analyzer

Specimen Requirements

Serum or Plasma

Container: SST or Green top Lithium heparin

Specimen Collection: 1 mL (minimum 0.5 mL)

  1. Allow specimen to clot completely if a serum tube (SST) was used for the draw.

  2. Separate serum (SST) or plasma (Lithium Heparin) from cells within 24 hours and transport refrigerated. If red top tube is collected, separate serum from cells within 2 hours and place in separate plastic tube and cap immediately.

  3. Properly label tube with patient's name, DOB, requisition number and type of tube sample drawn from i.e. GREEN.

 

Specimen Transport/Stability

Refrigerated: 24 hours on gel, 7 days poured off

Specimen Rejection

1.  EDTA, sodium citrate or sodium fluoride-oxalate plasma specimen

2.  Under-filled Tube

3.  Unlabeled Specimen

4.  Clotted or Hemolyzed Specimen

5.  Specimen exceeds stability requirements

Maximum Laboratory Time

24 - 48 hours

Reference Ranges

Sodium      mMOL/L
Newborn    133 - 144
1mo    137 - 146
12 yrs    136 - 145

Critical :  REFER TO LH-W CRITICAL VALUES POLICY

 

Day(s) Test Set Up

Daily

Test Classification and CPT Coding

84295