Julia,
1:40 speckled is what I had when dxd, my Dr. considered it positive in light of my other bloodwork. My anti ds-dna was high, as was my igg. Several other things were really off in my bloodwork too. I was having significant problems with my liver, kidneys etc. at the time in addition to a nasty body wide and malar rash.
I had been using prescription steroid lotion on large areas of my body for the rash for a few weeks before my ana test was done, which may have effected the result. Were you on any medications before/during the time your blood was drawn for the ana test? My Dr. re-ran my ana test a year later, at that time I was taking 10 mg. prednisone daily and 400 mg. plaquenil daily, and the result was still 1:40 speckled. I had been on higher doses of prednisone the month prior to the test.