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OSMOLALITY

Message
Collect a full tube, following standard venipuncture techniques. Send sample to lab as soon as possible. Sample needs to be centrifuged within the hour since collection.


Test Code
LAB107 OSMO


Alias/See Also
OSMO


CPT Codes
83930

Instructions
Processing Instructions (Lab use only): Centrifuge and separate cells after clot formation and within 1 hour of collection. Minimum Testing Volume: 0.1 mL Serum Transport Temperature: Refrigerated Stability: Ambient: 24 hoursRefrigerated : 24 hoursFrozen: N/A MVH Stability only: Ambient: 4 hoursRefrigerated : 7 daysCauses for Rejection: Samples not centrifuged within 1 hour of collection, unlabeled, mislabeled, wrong tube type, hemolyzed, QNS, exceeds specimen stability requirements.


Report Available
STAT 4-Hours|Timed 24-Hours|Routine 24-Hours|STAT 1-Hours|Routine 2-Hours|Timed 2-Hours


Clinical Significance
1230130061



Last Updated: May 18, 2026


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.