When persistent joint pain strikes, the search for answers often leads to a crucial diagnostic tool: the rheumatoid factor test. This relatively quick blood analysis serves as a window into the immune ...

A rheumatoid factor (RF) test detects rheumatoid factor, a type of antibody (proteins that fight off harmful substances) in your blood. RF antibodies sometimes attack healthy cells and tissues, ...

Rheumatoid factor (RF) is a type of antibody, an immune system protein that helps the body fight foreign substances like bacteria and viruses, called antigens. Antibodies, also known as ...

A rheumatoid factor test measures the amount of rheumatoid factor in your blood. Rheumatoid factors are proteins produced by your immune system that can attack healthy tissue in your body. High levels ...

Lyme disease and rheumatoid arthritis share similar symptoms, but Lyme disease is caused by a bacterial infection from ticks, while the cause of rheumatoid arthritis is unknown. Rheumatoid arthritis ...

Among a cohort of first-degree relatives of patients with rheumatoid arthritis (RA), certain patient characteristics, as well as symptoms, helped predict a possible increased risk for developing the ...

Although rheumatoid arthritis (RA) is known to be dependent on both genetic and non-genetic factors, little is known about the extent to which environmental influences, such as exposure to mineral ...