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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Research Shows Free T4 and Free T3 Ranges for Individual Thyroid Patients are Less Than Half as Wide as The Wide Population Laboratory Ranges

This is a truly important piece of research. The FT4 and FT3 ranges for individual people are less than half ...

Is it Possible to Predict T3 Dosage When Changing Thyroid Medication to T3?

These type of questions arises frequently. Should T3 and T4 medication be used in a fixed ratio, or use FT4 ...

Thyroid Patients Need Enough T3 Thyroid Hormone to Resolve Their Hypothyroidism Symptoms

Going by standard laboratory test range guidelines is often NOT going to tell you whether you are correctly treated. This ...

Baseline Thyroid Hormone Testing for Young Adults?

I think all young people who have one or more parents who have thyroid disease ought to have baseline thyroid hormone ...