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Specimen Collection Manual and Test Catalog

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SODIUM

Geisinger Epic Procedure Code:  LAB3064    Geisinger Epic ID:  14426

SPECIMEN COLLECTION
Specimen type: 

Plasma or serum


Preferred collection container: 
Specimen required: 

2 mL of serum or plasma; minimum 0.2 mL.



SPECIMEN PROCESSING
Processing instructions: 

Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection.


Transport temperature: 

Refrigerated.


Specimen stability: 

Room temp / Refrigerated: 7 days.


Rejection criteria: 

Stability limits exceeded.



TEST DETAILS
Reference interval: 

135 - 146 mmol/L.


Critical values/courtesy alerts: 
Below 120, above 155 mmol/L.
CPT code(s):  84295
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.
The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.

Test includes: 

Sodium.


Methodology: 
Potentiometric
Synonyms: 

NA


Clinical significance: 

Sodium measurements are useful in the diagnosis and treatment of aldosteronism, diabetes insipidus, adrenal hypertension, Addison's disease, dehydration, inappropriate antidiuretic hormone secretion, or other diseases involving electrolyte imbalance.


Doctoral Director(s): 
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC
Review Date:  12/27/2024

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