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Rheumatoid Factor

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Also known as: RF
Formal name: Rheumatoid Factor

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NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used.

Sources Used in Current Review

MedlinePlus Medical Encyclopedia. Rheumatoid factor (RF). Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003548.htm. Accessed March 2014.

Mayo Clinic. Rheumatoid factor. Available online at http://www.mayoclinic.com/health/rheumatoid-factor/MY00241 through http://www.mayoclinic.com. Accessed March 2014.

MedicineNet.com. Rheumatoid Factor (RF) Blood Test Results and Significance. Available online at http://www.medicinenet.com/rheumatoid_factor/article.htm through http://www.medicinenet.com. Accessed March 2014.

Quest Diagnostics. Rheumatoid Arthritis Laboratory Markers for Diagnosis and Prognosis. Available online at http://www.questdiagnostics.com/testcenter/testguide.action?dc=CF_RheumatoidArthritis#Test%20Selection through http://www.questdiagnostics.com. Accessed March 2014.

Street T et al. Rheumatoid Factor. Medscape. Available online at http://emedicine.medscape.com/article/2087091-overview#a30 through http://emedicine.medscape.com. Accessed March 2014.

About.com. What Is Rheumatoid Factor? Available online at http://arthritis.about.com/od/radiagnosis/a/rheumfactor.htm through http://arthritis.about.com. Accessed March 2014.

Sources Used in Previous Reviews

Thomas, Clayton L., Editor (1997). Taber's Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition]. Pp 1681.

Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby's Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO. Pp 749-750.

Peng, S. (2005 April 20). Rheumatoid Factor. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003548.htm.

Rindfleisch, J. A. and Muller, D. (2005 September 15). Diagnosis and Management of Rheumatoid Arthritis. American Family Physician [On-line journal]. Available online at http://www.aafp.org/afp/20050915/1037.html through http://www.aafp.org.

(© 2006). Rheumatoid Factor. ARUP's Guide to Clinical Laboratory Testing [On-line information]. Available online at http://www.aruplab.com/guides/clt/tests/clt_196b.jsp#1147119 through http://www.aruplab.com.

Borigini, M.J. (Updated 2009 May 31). Rheumatoid factor (RF). MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003548.htm. Accessed March 2009.

(Revised 2009 April). Handout on Health: Rheumatoid Arthritis, National Institute of Arthritis and Musculoskeletal and Skin Diseases [On-line information]. Available online at http://www.niams.nih.gov/Health_Info/Rheumatic_Disease/default.asp through http://www.niams.nih.gov. Accessed March 2009.

Borigini, M.J. (Updated 2010 February 7). Rheumatoid Arthritis. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000431.htm. Accessed March 2009.

Smith, H. (Updated February 22). Rheumatoid Arthritis. eMedicine [On-line information]. Available online at http://emedicine.medscape.com/article/331715-overview through http://emedicine.medscape.com. Accessed March 2009.

King, R. and Worthington, R. (Updated 2010 January 12). Arthritis, Rheumatoid. eMedicine [On-line information]. Available online at http://emedicine.medscape.com/article/808419-overview through http://emedicine.medscape.com. Accessed March 2009.

Pagana, K. D. & Pagana, T. J. (© 2007). Mosby's Diagnostic and Laboratory Test Reference 8th Edition: Mosby, Inc., Saint Louis, MO. Pp 825-826.

Wu, A. (© 2006). Tietz Clinical Guide to Laboratory Tests, 4th Edition: Saunders Elsevier, St. Louis, MO. Pp 958-961.

Sjogrens Syndrome Foundation. About Sjogrens syndrome: Diagnosis. Available online at http://www.sjogrens.org/home/about-sjogrens-syndrome/diagnosis through http://www.sjogrens.org. Accessed May 2010.