Rheumatoid Factor »
What is rheumatoid factor?
Rheumatoid factor is an antibody that is measurable in the blood. Rheumatoid
factor is actually an antibody that can bind to other antibodies.
Antibodies are normal proteins in our blood that are
important parts of our immune system. Rheumatoid factor is
an antibody that is not usually present in the normal
individual.
For what is the rheumatoid factor test used?
Rheumatoid factor is commonly used as a blood test for the diagnosis of
rheumatoid arthritis. Rheumatoid factor is present in about 80%
of adults (but a much lower proportion of children) with
rheumatoid arthritis.
Can rheumatoid factor be present in a patient without
rheumatoid arthritis?
Yes. Rheumatoid factor is also present in patients with other conditions,
including other connective tissue diseases (such as systemic
lupus erythematosus), some infectious diseases (such as
infectious hepatitis, syphilis, infe...
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I was just diagnosed with polymyalgia rheumatica (PMR) on October 31, 2008. I started hurting at the end of August 2008. It started with me not being able to use my right foot to push the pedal that I use to type with. (I do medical transcription at home.) Then my knees started hurting, and it progressed to my low back, right hip and buttocks and down the back of my right leg. I could not lift my right leg behind me like to put on clothes, socks and shoes, get in and out of the car, etc. I then had to start using a cane. I felt as if I had the flu and that someone was sitting on me. I had no energy at all. I usually have a high tolerance for pain. Then I thought it was just in my head. Finally, I went to the doctor. My RA factor was normal but my sed rate was elevated. I took some OTC anti-inflammatories, but nothing helped. She then ordered a Parvovirus human B-19 test, sed rate, CRP and another RA. My parvovirus was positive; the RA was still negative; my sed rate had gone up (68); and my CRP was 50. She then sent me to a rheumatologist, which took a while to get into, and she diagnosed me with PMR. I have been on Prednisone now since November 2, 2008 at 10 mg per day. Most days it works, but today, I am hurting. Right now, both of my shoulders, my right wrist, right knee and both buttocks hurt. When I feel really good, I wonder if there is really anything going on, and then just like today, it brings me back to reality.
Related Reading: polymyalgia rheumatica | flu | Prednisone