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Just for some context, patients with suspected rheumatoid arthritis or other rheumatological disease are commonly screened with a rheumatoid factor (RF) test within a hospital. To answer your question, a very recent meta-analysis of the RF test (see related link) found that it was about 69% sensitive and 85% specific.


The RF test is sensitive however it is nonspecific. Rheumatoid factor is usually associated with rheumatoid arthritis (RA) but may also be involved in a number of autoimmune diseases, including Sjögrens syndrome,i some and viral infections, and is also found in a small percentage of healthy people.
First answer by Diberri. Last edit by Robbb. Contributor trust: 2276 [recommend contributor recommended]. Question popularity: 19 [recommend question].

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