Methotrexate, Serum (Nordx)

Test Code

MTX2NDX

Alias/See Also

NorDx - Methotrexate, Serum

CPT Codes
80299

Preferred Specimen

2 mL serum collected in a no additive (red-top) tube, transferred to a plastic screw-cap vial

Minimum Volume

0.15 mL

Transport Temperature

Refrigerated

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Serum Separator Tubes

Methodology
Fluorescence Polarization Immunoassay (FPIA)

Setup Schedule

Daily

Report Available

Next day
Available STAT

Clinical Significance

Methotrexate is used to treat severe psoriasis that cannot be controlled by other treatments. Methotrexate can be used along with rest, physical therapy, and sometimes other medications to treat severe active rheumatoid arthritis. Methotrexate is also used to treat certain types of cancer including cancers that begin in the tissues that form around a fertilized egg in the uterus, breast cancer, lung cancer, certain cancers of the head and neck, certain types of lymphoma, and leukemia.

Performing Laboratory
NorDx Laboratory
301A US Route 1
Scarborough, ME 04074

Additional Information
Nordx - Order Code MTX

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.