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

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?

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)

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?

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

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

Can FT3 be Used to Manage Liothyronine (T3) Thyroid Treatment?

Many doctors and thyroid patients think that the FT3 thyroid lab test can be used to assess whether the dosing ...

We Need a New Paradigm of Thyroid Treatment!

It is desperately clear to thyroid patient support groups and to many well-informed thyroid patients that there is an urgent ...

More T4 or T3 Thyroid Medication May Not Always Raise Patients’ FT3 Levels in Thyroid Hormone Treatment

Sometimes 2 +2 does not equal 4 when dealing with thyroid hormones. This blog post is relevant to those patients ...

Biochemical Bigotry – Enforcing Normalised Thyroid Lab Test Results is Harmful to Health

Here is another great article about the flawed use today of thyroid laboratory tests and lab reference ranges. It talks ...

Principles and Practical Tips for FT4, FT3 and Reverse T3

This is from a post by Tania S. Smith on her website for Canadian thyroid patients. I have never been ...