Just read through this and it's the first time I've seen this range quoted as being 'healthy' level for thyroid antibodies....link at the end.
The summary:
Thyroperoxidase antibodies (aka TPO ab)
* Between 100-300 (roughly) is considered a clinical win
* Normal reference range is < 35 UI
* The higher the levels the greater the risk of developing true hypothyroidism in the future
drruscio.com/tips-for-hashi...
I'd love to hear your thoughts, and any other research links. Thanks.