Osmolality, Serum

Message
Test performed at York Hospital Laboratory.


Test Code
OSMO


CPT Codes
83930

Preferred Specimen
1mL Serum


Minimum Volume
0.5mL Serum


Transport Temperature
Room temperature


Specimen Stability
  • Room temperature: 4 days
  • Refrigerated: 5 days
  • Frozen: 14 days


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross icteric; gross hemolysis; gross lipemic; heparinized plasma


Methodology
Freezing point depression

Report Available
Daily Report – same day


Reference Range
278-305 mOsm/kg


Clinical Significance
For the evaluation of fluid and electrolyte balance


Performing Laboratory
York Hospital



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.