gimel, one of our very knowledgeable, trusted members has joined with 2 others to write a paper about the thyroid process, testing and treatment.
Although many doctors only go by TSH or insist that they adhere to ATA protocols, this paper explains why TSH (and ATA protocol) is inadequate and why many of us end up being dissatisfied with our treatment.
You can find the article at the following link:
https://thyroiduk.org/further-reading/managing-the-total-thyroid-process/