Wow that's a high count! My RA Factor is 140 and been diagnosed with RA by two rheumatologists. Two other rheumatologists said I don't have RA. After two and a half years of suffering with arthritis and neurological problems, I asked the doctors to give me a Lymes Disease test. They had been refusing to give me this test since the beginning when I wasn't feeling well. I did take the test and it came out positive. Just took out a Picc Line and was getting IV antibiotics for 28 days. I haven't rechecked my ra factor yet. I'm very curious about it. I read online that Lymes disease or paracites can cause a high ra factor.
There are other things that can cause a high ra factor. What has your doctor told you?