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Blood test came back slightly elevated RA..false positive?

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Old 04-18-2007, 05:00 PM   #1
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Join Date: Apr 2007
Location: Bakersfield CA
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Katzpurr HB User
Question Blood test came back slightly elevated RA..false positive?

Hi there all
I had a complete blood panel done. Ruled out Lupus, Cancer and a lot of other diseases. Nuclear anti-antibodies also negative.The only thing that came back semi abnormal was that my Rhumetoid Arthritis factor or whatever its called was slightly elevated. I do not seem to have any other symptoms of arthritis except a bum knee from a soccer injury way back in high school..I am now 37. Could it be a false positive? He said I was healthy and everything looked normal except for a SLIGHTLY ELEVATED RA. He does not seem to think I have RA and wants me to come back in a month. IF not RA what else would make this blood test come back slightly elevated? Something I ate? I had a blood panel done last year and my thyroid was slightly low and now thats normal. Is this something that fluctuates like the thyroid? Please let me know...its bugging me!

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Old 04-20-2007, 07:41 AM   #2
Join Date: Apr 2007
Location: west yorkshire
Posts: 7
yorksguy61 HB User
Re: Blood test came back slightly elevated RA..false positive?

Hi Stacey, it is still possible that you have a form of arthritis. Sero negative arthritis shows normal in blood tests (hence its name serum negative) , there are also other forms of arthritis which don't show up. I had the exact same problem as you two years ago, slightly raised rheumatoid factor but nothing else. Finally turned out many months later that they told me i had fibromyalgia.
Hope you get sorted

Old 04-20-2007, 07:35 PM   #3
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Join Date: Oct 2002
Location: Bloomington, IN USA
Posts: 296
creinha HB User
Re: Blood test came back slightly elevated RA..false positive?

Rheumatoid Factor can be slightly elevated in 1-2% of a healthy population. You say you aren't having any arthritis symptoms. Why did you have the test run? What symptoms are you having?

Old 04-23-2007, 02:55 PM   #4
Join Date: Apr 2007
Location: Sarasota, FL USA
Posts: 1
ClareD3 HB User
Re: Blood test came back slightly elevated RA..false positive?

7 years ago my RA factor was slightly dectectable, then the next test it was normal. However after a year I was diagnosed on symptoms alone which are classic. I have had my ups and downs, been on Enbrel almost 4 years and it has made my life so much better. I wish I had started it right away years ago. But it was new, then you had to be on a waiting list for it. I was on the list for almost a year.


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