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Test Code NA Sodium, Plasma or Serum

Additional Codes

LAB122

Performing Laboratory

Central Peninsula Hospital

Collection Method

Venipuncture

Container

Lt Green / Plasma Separator / Lithium Heparin

Specimen Type

Preferred

  • Plasma- Light Green Top (Lithium heparin)

 

Acceptable

  • Serum- Gold Top SST or Red Top

Minimum Volume

0.5ml

Specimen Stability

Ambient 14 days
Refrigerated (4°C to 8°C) 14 days
Frozen(-40°C to 0°C) 1 year

Reference or Target Ranges

Age Male Female
< 7 days 132 - 142 132 - 142
>7 days 135 - 145 135 - 145

 

Reportable Units

mmol/L

Critical Value

≤ 120mmol/L

 ≥ 160 mmol/L

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

Performance Information

Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availability Yes
Performing Bench CPH Chemistry
Methodology/Method Description Roche Cobas

CPT Codes

84295

Last review/edit date

2025