High TgAb but normal TPO.

[Kirstyrc]

On 50mcg levothyroxine. Ordered a Randox test to monitor level. TSH is continuing to decrease and FT4 now in normal, heading to upper ranges.

My TPO levels normal but TgAb is 1200+ when lab ranged are 0 - 115. TPO seems the main level rised in Hashis. Has anyone experienced this?

[helvella Administrator Thyroid UK]

You are far from the only member who has this situation. And it is why so often it is suggested that both antibodies should be tested.

I have no idea why some have one, some the other, and some both. But it very clearly is the case.