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METHOTREXATE LEVEL

Message
Tube must be protected from light. The sampling time for methotrexate will be dependent on Dose, duration of infusion, and clinical status of the patient. Collect a full tube, following standard venipuncture techniques.


Test Code
LAB481 METHO


Alias/See Also
METHO


CPT Codes
80204| 80299

Instructions
Processing Instructions (Lab use only): Tube must be protected from light. Centrifuge and separate cells as soon as possible, avoid fibrin, red blood cells, and other particulate matter may cause an erroneous result. Minimum Testing Volume: 0.5 mL Serum Stability: Ambient: 4 hoursRefrigerated (OFF GEL): 1 weekFrozen: Up to 4 weeks (Can only withstand 3 freeze thaw cycles).Causes for Rejection: Unlabeled, mislabeled, wrong tube type, hemolyzed, and QNS.


Clinical Significance
1230130101



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.