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T4 (Thyroxine) Test: What It Is and What It Can Tell You

If your healthcare provider has ordered a T4 test, you may wonder what it is. Thyroxine is another name for T4, which is one ...
Medscape

Free T4 Measure May Not Aid in Thyroid Function Testing

In 1 year of thyroid function tests across Wales, the incidence per 100,000 population of low free T4 (FT4) was 98-301, whereas that of central hypothyroidism was just two. With the current increased ...