I had my ANA tested and my result said <1:80 and I have four autoimmune diseases. smh. :) But if you don't really have any symptoms it's probably nothing to worry about.
"low-titre ANF (titres of <=1:80) may be clinically insignificant. Higher titres may be seen in various conditions, including RA and connective tissue diseases, and sometimes in viral and chronic infections (2)" - ANA -
GP Notebook.