Question about the Blood test for RA factor

December 4, 2006

I have had 2 blood tests one showed a positive RA factor. I went to a

new RA doctor and his test(the second one) showed a negitive. So I am

confused and I am not sure if I should have a third or not. Is there

a " Normal range " for RA factor or is it just a positive/negitive

result? If it is negitive, does that rule out RA then?

December 5, 2006

Don't know if this helps you or not, but the blood tests I have had showed a

" normal range " . The first test I took, I think the normal range was up to

around 12-14. Mine was like a 28 (still really low compared to many people in

this group.) But there are even people that are (I think the term is..)

" seronegative " which means their blood tests do not detect RF, but they DO have

RA. If you have the other symptoms or RA, but a low or no RF, it is likely you

have RA. Your rheumatologist should be able to diagnose you with or without RF.

in Texas

kbr64151 <kbr64151@...> wrote:

I have had 2 blood tests one showed a positive RA factor. I went to a

new RA doctor and his test(the second one) showed a negitive. So I am

confused and I am not sure if I should have a third or not. Is there

a " Normal range " for RA factor or is it just a positive/negitive

result? If it is negitive, does that rule out RA then?

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