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Test Code Na Sodium Level

Patient Preparation

No special patient preparation required

Special Collection Instructions

Do not collect in Na-Heparin tube

Collection Method

Venous collection

Minimum Volume

  • Adults: 0.8ml
  • Pediatric: 0.5mL

Container

Lt Green / Plasma Separator / Lithium Heparin

Preferred Specimen

Light Green Top (lithium heparin) plasma

Acceptable Specimens

Serum:

  • Gold Top SST
  • Red Top

Plasma:

  • Light Geen Top (lithium heparin)

 

Reference or Target Ranges

136 – 145

Reportable Units

mmol/L

Critical Value

<125 or >170

Reasons for Rejection

 

Hemolysis Threshold 1000 mg/dL
Icterus Threshold 60 mg/dL
Lipemia Threshold 2000 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

 

Ambient 14 days
Refrigerated (4°C to 8°C) 14 days
Frozen(-40°C to 0°C) 2 years

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench UH Chemistry, WCH Chemistry
Methodology/Method Description Ion-selective Electrode (ISE)

CPT Codes

84295