Tests are just tests
Tests are tests. The level of ANA
positivity has little or no relationship to disease activity.
A high titer ANA only means it is significant enough to follow. Tests are now so sensitive that they may precede disease by years and years. Anas can be induced by common viral illnesses, albeit transiently. So don't worry. You did not specify sx, but at this point you only need rx for your ills!