Free T4 &/or Free T3

Paul is an active advocate for thyroid patients through his regular blog posts, which offer a wealth of information that both relate to his books as well as current news and insights.

This tag will be used when either or both of the Free T4 (FT4) and Free T3 (FT3) levels of thyroid hormones are being discussed. It also applies when a blog post is discussing the thyroid lab tests for FT4 or FT3.

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Low T3 Levels Are Linked to Low Insulin and Increased Risk of Developing Type 2 Diabetes

By Paul Robinson | Jul 25, 2021

A 2016 research study by the Endocrine Society showed that the thyroid hormone T3 controls and regulates the release of ...

Can Someone Have Free T4 and Reverse T3 When Taking T3-Only Medication?

By Paul Robinson | Jun 19, 2021

From time to time, a thyroid patient asks me the question: how can they have a reasonably high level of ...

Why So Many Thyroid Patients Fail to Recover on Levothyroxine (T4)

By Paul Robinson | Nov 16, 2020

This is a great new blog post from Dr Tania S. Smith of Thyroid Patients Canada. The post clearly spells ...

Is There a Connection Between Thyroid Hormones and Depression?

By Paul Robinson | Oct 1, 2020

Far too many anti-depressants are prescribed these days when the real issue is some underlying cause. I know of many ...

Using SPINA-Thyr Software for Patients on No Thyroid Treatment or on Levothyroxine (T4) Only

By Paul Robinson | Sep 20, 2020

SPINA-Thyr is a free diagnostic application, developed by Dr. Johannes Dietrich. The software application takes thyroid laboratory test values TSH, ...