Having AMA or ATG positivity just indicates an autoimmune reason for your hypothyroidism
. Because of these antibodies
you have got dyshormonogenesis of hypothyroidism. You do not need to worry about these tests much nor you need to reapeat them anytime again to see whether their values are high or low. Because you'll just lose money. Clinically it doesn't make any difference later. Only couple of things you have to keep in mind that your dose of replacement of thyroid hormone might keep going up, so keep checking your thyroid every 3 months till your TSH
is stabilized for more than 6 months. And if you have family members who have not tested their thyroid, ask them to get it done as antibody positivity and hence the thyroid disorders can run in families. Hope this helps. Do get back to me for any further queries.