I don't know what the highest Rheumatoid Factor (RF) ever recorded might be. Here is the article at Lab Tests Online which discusses RF. However, 1100 does seem rather high.
How the RA factor tests are read is confusing. But a lot of the time the actually # is determined by which method the lab used to read it. There is a titer test in which the saline is used to dilute the blood in the vial. that is usually read in a ratio of 1:20 being normal. The first # doesn't change and the second is the indicator. The other process of reading the vial is to use a light meter. In whick they measure how much light can pass through the blood. The RA antibody makes blood appear cloudy in this specific type of light. This number is read in units such as 100.
Most doctors don't know which method is used and even with the titer test only the second # is received in the report since the first doesn't change.
I know this sound confusing, and it is. Over the years I have received many different readings to my tests especially if I change doctors. They have ranged from 240, 85, 675, 1200, and 57 just to mention a few of the #'s.
Sounds like a bunch of random #'s to me. Might as well be a lottery pick. But yes it does seem that 1100 is high. Just keep track of your symptoms. the key is to treat disease and it's symptoms not the #'s.
My brother had his first RA factor of 2700. Now he is battling lung cancer (stage IV) and when they did his RA factor with his preliminary blood work, it was 4800. He was taking methortrexate at the time and prednisone. Now he gets chemo and ony predisone for pain. They tried rituxan, but he reacted as he did with remicade. I also have RA but low numbers, but lots of symptoms. I am best controlled with arava and enbrel. 1100 is also very high. Get treated asap...you'll feel so much better.
My levels keep getting higher and higher. When I was first tested it was 119 then it went to 179 then I got my results back today and it was 329. I am starting methotrexate and I am praying it works. But what pain medication help when you have flare ups? When I get flare ups in my shoulder or my knee or feet it is the worst pain ever. I have to wrap my arm to my body so it wont move the same with my knee. I am on a lot of pain meds because of a bad back and opiods do not help at all with the flare ups and they last about 3 to 5 days. What should I do?
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