Most doctors do not consider 1:40 to be a true positive - so I wouldn't ask to retest it just on the basis of the previous very low positive result. But as long as you continue to have symptoms that have no explanation... then I'd continue to ask for some of these basic blood tests (like the ANA) to be repeated from time to time.
Hope you find some answers and helpful treatment soon.
Hope you find some answers and helpful treatment soon.
