A rheumatoid factor test checks for an antibody that can be a marker for rheumatoid arthritis. It is one part of diagnosis. Not everyone with a positive rheumatoid factor blood test has rheumatoid ...

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, ...

The phase 4 ANNEXA-I trial was stopped early after showing superior hemostatic efficacy and the capability to limit potentially life-threatening intracerebral hemorrhage (ICH) compared with usual care ...