Hi Sherry....UC will come back with a positive ANCA as well...
I found this site to confuse you further....as you see it's a complicated process. You have lots going on...maybe the rheumie will be able to narrow it all down to one thing.
Try not to overreact at this point...as strange as this sounds, you should show positive considering all that's going on.
Hang tough! I hope you don't have to wait too long for your appointment...the waiting and guessing is the worst!