Blood Tests - Please help!

Hi. I would really appreciate anyones opinion on my blood test results. I am in the "testing" stage at the moment. I have had r.a. for
14 years, but am experiencing alot of neurological symptoms so the rheumy is testing for other auto-immune stuff. So any advice
would be greatly appreciated. These were the results....

RA Negative (even though I sure have it, without a doubt!!)

ENA, Sm, RNP, SS-A, SS-B, SCL70 All Negative

ANA Negative

Anti-DS-DNA Listed as "out'of'range" Neither negative nor totally positive either.

How can I have an out-of-range Anti-DS-DNA when everything else, including the RA factor, and the ANA, are negative. It just
doesn't make any sense to me.

Any suggestions, anyone? I would really appreciate your opinion.

Thank you!!!