Thyroid Lab Tests

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 category covers thyroid laboratory tests, thyroid lab test results and their interpretation. It covers how they ought to be used and the problems associated with how they are used currently.

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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 ...

Blue Horizon Medicals Have a Covid-19 PCR Test for UK Patients

In partnership with Blue Horizon Medicals, this website is delighted to offer UK thyroid patients a 10% discount on their ...

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 ...

Thyroid Blood Testing with Blue Horizon Medicals

Home-based thyroid hormone, cortisol and other useful blood tests for UK thyroid patients. In partnership with Blue Horizon Medicals, this ...

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 ...

Using TSH to Manage Thyroid Treatment is a House of Cards Ready to Collapse

I recently put out a blog post that introduced an important new piece of research that shows that a suppressed ...

Cortisol Results Inconsistent Between Saliva Testing and Blood Testing

This post may help to explain why sometimes we might see an inconsistency between the result for an 8:00 am ...

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 ...

Reverse T3 (rT3) – What It Is and What It Means For Thyroid Patients

Reverse T3, also known as rT3, is a marker of poor conversion and potentially blunted T3 action. This makes it ...