Yes you can have RA with an Rf of 20. When a doctor sees the symptoms of RA they automatically check for RF because it is a good indicator that that is the problem when taking the symptoms into...
Rheumatoid factor is an antibody that can be found in the immune system that can mistakenly turn on some of the tissues like connective tissues of the body. If a person seems to be suffering from...
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...