That test is indicative of you having Hashimoto's Thyroiditis. The test you listed is for the antibodies associated with Hashi's. With Hashi's the autoimmune system erroneously identifies the thyroid gland as foreign to the body and produces antibodies to attack and eventually destroy the gland. As their proceeds, the gland produces a diminished amount of thyroid hormone, the biologically active thyroid hormones drop and THS levels rise. If TPO ab is the only test done you need to make sure they always test for both Free T4 and Free T3 every time you go in for tests, along with a Reverse T3 test at least once, a cortisol test and tests for Vitamin D, B12 and ferritin. Please post results and reference ranges shown on the lab report for any of these you may have had.
Having a raised Anti-TPO value means your thyroid function going to be affected now or soon. So if your current levels are normal, both TSH, Free T4 and Free T3 then need to repeat the test every 3 months or so to make sure your thyroid hormone levels not going down. An increasing TSH number often means thyroid function is declining, for example if your TSH level is now 2.0 and after 3 months it gone to 4.0 then probably you need to start thyroid hormone pill as hypothyroidism affects whole body and untreated hypothyroidism can have many complications. If your doctor is not willing to prescribe then find another.
My first question is: How do you feel? what symptoms if any are you having?
nest would be what other blood test results do you have or had done recently in addition to the TPO test? If you have any, please post them along with the reference ranges.
if you have not done other testing, I would HIGHLY recommend you get the following tests done.
1) TSH
2) Free T4
3) Free T3
4) Vitamin D3
5) Vitamin B-12
6) Iron
7) Ferritin
deficiency in any one or more of these can mimic or make worse low thyroid type symptoms. Such as fatigue.
If you are not having any symptoms now. Getting these tested would at a minimum provide a good base line for future reference. Since you have Hashi's, it is almost certain at some point, (sooner or later) you will probably need to start thyroid hormone replacement medication.