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MAGNESIUM

Message
Collect a full tube, following standard venipuncture techniques.


Test Code
LAB103 MG


Alias/See Also
MG


CPT Codes
83735

Includes
Order LAB2361 instead of this if the patient is pregnant and receiving magnesium therapy.


Instructions
Processing Instructions (Lab use only): Centrifuge and separate cells after clot formation and within 4 hours of collection. Minimum Testing Volume: 0.05 mL Serum or Plasma Transport Temperature: Refrigerated Stability: Ambient: 7 daysRefrigerated : 7 daysFrozen: 1 year Causes for Rejection: Unlabeled, mislabeled, wrong tube type, QNS, hemolysis.


Clinical Significance
1230130060



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.