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Sodium, Serum

Test Code
NA


Preferred Specimen
Serum, 0.5 mL minimum


Transport Container
SST tube


Transport Temperature
Unspun specimen stable for 2 hours at room temp. and 4 days if refrigerated


Reference Range
Critical Values: 
Adults<120 or >160 mmol/L
Pediatrics<125 or >155 mmol/L


Clinical Significance
Used to detect hyponatremia or hypernatremia associated with dehydration, edema and a variety of diseases. May also be used to monitor certain mediations, such as diuretics.




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.