I found some pretty stellar resources for thyroid information but it’s on another forum and linking them is against the rules.
In the interest of full disclosure: I know nothing of Thyroid Function or testing beyond what I’m copying and paste-ing here.
Do not rely on this for medical advice, it is informational only.
I will copy the entire article, then put an AI generated TL;DR at the bottom.
If you are well-read in thyroid information, please tell me where any of this is wrong! I have looked over many forums for good thyroid info and have found nothing until this.
A brief overview of information I will post:
Thyroid Function Tests:
- TSH (Thyroid Stimulating Hormone) is the primary test for thyroid function.
- A high TSH level may indicate hypothyroidism (underactive thyroid) and a low TSH level may indicate hyperthyroidism (overactive thyroid).
- Free T4 and sometimes Total T4 test measure thyroid hormone levels.
- Other tests like Antithyroid antibodies, T3 resin uptake, Reverse T3 and Thyroglobulin are used in specific situations.
- The “normal” TSH range can vary depending on the lab and age.
Thyroid Medications for Hypothyroidism:
- Levothyroxine (T4): This is the most common medication prescribed, but some people may not convert T4 to the active form T3 well.
- Liothyronine (T3): This is the active form of thyroid hormone and can be prescribed in combination with Levothyroxine.
- Desiccated Thyroid (Armour): This is a “natural” medication made from animal thyroid glands and contains a mix of T4 and T3 in a pre-set ratio (usually 4:1 T4 to T3).
Key Points:
- There is ongoing debate about the best way to diagnose and treat thyroid problems.
- Some studies suggest that looking at changes in hormone levels, even within the normal range, might be useful.
- The best medication for a patient depends on their individual needs and how they respond to treatment.
- It is important to work with a doctor to find the best treatment option.
