Rheumatoid factor

Test Code
RHEUMATOID FACTOR


Alias/See Also
RF
Chemistry


Preferred Specimen
Gold Top Tube


Minimum Volume
2 mL


Transport Temperature
Refrigerate


Specimen Stability
Room temperature: 1 day
Refrigerated (2-8°C): 3 days
Frozen (-20°C or colder): 1 month


Methodology
Turbidimetric/Immunoturbidimetric

Setup Schedule
M-F


Report Available
TAT 1 - 2 days


Reference Range
0-15 IU/mL


Clinical Significance
Elevated RF is found in collagen vascular diseases such as SLE, rheumatoid arthritis, scleroderma, Sjögren's Syndrome, and in other conditions such as leprosy, tuberculosis, syphilis, malignancy, thyroid disease and in a significant percentage of otherwise normal elderly patients.


Performing Laboratory

Test performed at West Roxbury Chemistry Lab
Contact: Jonathan Dryjowicz-Burek 857-203-5973




Last Updated: April 9, 2019


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.