This patient support community is for discussions relating to thyroid issues, goiter, Graves disease, Hashimoto's Thyroiditis, Human Growth Hormone (HGH), hyperthyroid, hypothyroid, metabolism, parathyroid, pituitary gland, cancers, thyroiditis, and thyroid Stimulating Hormone (TSH).
In fact, TPOab (646) is indicative of either condition and found in both. The TGab (3,000!) along with TPOab confirms Hashimoto's.
My advice is to read up about Hashimoto's, and read about test info in threads here.