Ok , goolarra beet me to it. Yes this can also be graves (hyper).
If you have no obvious symptoms of either hypo or hyper yet, You really should get some other thyroid antibody tests in addition to TPOab. TSI is the one only for Graves.
I don't see a range, but they said its high. Over the range TPO indicates Hashimotos hypothyroid disease. In Hashimoto, autoimmune antibodies are slowly attacking the thyroid gland.
This is the most common cause of hypothyroid. Most of us here have this.
No med will lower antibodies, thyroid med is simply replacement hormone for what someone with Hashi is lacking.
There are and always will be snake oil remedies promised to cure Hypothyroid - these are false claims for those with high anti bodies.
An elevated TPOab is indicative of autoimmune thyroid disease, either Hashimoto's thyroiditis (hypo with possible swings from hypo to hyper, especially in the early stages) or Graves' disease (hyper).
Are you taking thyroid meds?