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Sodium

SIM

12270 

CPT

84295 

Synonyms

NA 

Specimen Type

Plasma or serum 

Container

3.5 ml Green - Lithium heparin plasma separator 
4.0 ml Gold-top serum separator 

Collection Instructions

None

Volume

2 ml plasma or serum 
Min: 0.5 ml 

Additional Information

none

Patient Preparation

none

Specimen Processing Instructions

Plasma:  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Serum:  Allow to clot.  Centrifuge at 3380 rpm’s (±100) for a minimum of 10 minutes

Centrifuge within 2 hours of collection.

Transport Requirements

Refrigerated

Specimen Stability

Room temperature:  8 hours   Refrigerated: 5 days 

Rejection Criteria

•  If not centrifuged within 2 hours of collection. 
•  Gross Hemolysis

Reference Range

133-146 mmol/L

Critical Value

Lower limit = <120;  Upper limit = >160 

Test Includes

Sodium 

Methodology

ISE Crown Ether Membrane Electrode 

Testing Frequency

Daily, Monday - Sunday 

 

Reviewed By

Sandy Hammett 

Reviewed Date

2/2/2018

Supplemental

 

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