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Test Code NAFL or LAB197 Sodium, Body Fluid

Important Note

If this testing is to be performed on stool, the sample must be of liquid, pourable consistency.

Specimen Requirements

Container Type:

Sterile Container: 
Optimal Collection Volume: 

20 mL
Minimum Volume:

2 mL
Collection Instructions:
  • Use an aseptic aspiration technique
  • Include source of specimen on the collection tube
Specimen Transport:

Refrigerate
Processing Instructions: 

1. Pour off an aliquot from the sterile container

2. Spin the aliquot in a centrifuge

3. Deliver the aliquot to the chemistry department

Specimen Stability

Specimen Type Temperature Time
Body Fluid Refrigerated 7 days

Specimen Rejection Criteria

Gross hemolysis

Methodology

Roche Cobas - Potentiometric, indirect ion-selective electrode

Reference Ranges

No reference range established

Day(s) Performed

24/7

Expected TAT

Same day

Performing Laboratory

Bronson Laboratory, Chemistry - Kalamazoo and Battle Creek

Sample Retention Time

7 days

CPT Code

84302

LOINC Code

2950-4