If your healthcare provider has ordered a T4 test, you may wonder what it is. Thyroxine is another name for T4, which is one of the two main types of thyroid hormone the thyroid gland makes. The other ...

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 ...

If you're like most primary care clinicians, your email inbox is flooded with messages from patients with questions about lab results. A common query: Should I be worried about an abnormal value on a ...