I could be wrong, but I don't believe the antibody test is all that accurate--the biopsies are the diagnostic gold standard. I know for me, I'm IgA deficient to begin with so the antibody tests mean nothing. For others, false negatives are pretty common.
Current dx: Rheumatoid Arthritis
Suspected dx: UCTD/Lupus
Current Meds: Enbrel, Methotrexate, nexium, tramadol, nasonex, Nifedipine, Folic Acid, Tylenol PM