I had my RH factor checked and at that time, it was to check for Rheumatoid Arthritis, which is an Auto Immune Disease, but here is some additional information that I found on RH Factor.
Rheumatoid factorFactor ix complex (RF) is an immunoglobulin antibody which can bind to other antibodies that can attach to normalNormal saline flush body tissue, resulting in damage. Antibodies are normalNormal saline flush proteins found in the blood which function within the immune system.
A high level of rheumatoid factor can be caused by several autoimmune diseases (including rheumatoid arthritis) and some severe infections. Occasionally an elevated level of RF is present in about
1-2% of healthy people.
Although rheumatoid arthritis is the most common reason for a rheumatoid factor (RF) level greater than 23 and a titer greater than 1 to 20, there are other reasons for a positive test. The most common are systemic lupus erythematosus (SLE), scleroderma, Sj�gren's syndrome, and vasculitis. Less common conditions with high RF values include tuberculosis, mononucleosis, syphilis, leukemia, cirrhosis, chronic active hepatitis, infection of a heart valve (endocarditis), sarcoidosis, and some infections caused by a virus or parasite (such as malaria). Factors that can interfere with your test and the accuracy of the results include: Blood that is very high in fats, which may cause a falsely high rheumatoid factor (RF) result.
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