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RHEUMATOID FACTOR

Message
SENDOUT/BOSTON


Test Code
RF


Alias/See Also
RA, RF, RHEUMATOID FACTOR TITER


Preferred Specimen
SERUM: GOLD TOP TUBE


Minimum Volume
2mLs


Instructions
DRAW 1 GOLD TOP SST TUBE, LET CLOT FOR 30 MINUTES, SPIN DOWN AND SEND TO LAB.


Transport Container
ORIGINAL TUBE


Transport Temperature
REFRIGERATED


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

Additional Information
RHEUMATOID FACTOR


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.