Five years later, with the evacuation order relaxed, people started moving back home. Despite the re-population of the island, nearly a third of Miyake-jima remains permanently off-limits. The government conducts regular health checks on residents and enforces age restrictions in certain areas.
How is it used? The thyroid-stimulating hormone (TSH) test is often the test of choice for evaluating thyroid function and/or symptoms of a thyroid disorder, including hyperthyroidism or hypothyroidism. TSH is produced by the pituitary gland, a tiny organ located below the brain and behind the sinus cavities.
Thyroid hormone blood tests include: 1  Total thyroxine (T4). 2  Most of the thyroxine (T4) in the blood is attached to a protein called thyroxine-binding globulin. 3  Less than 1% of the T4 is unattached. 4  A total T4 blood test measures both bound and free thyroxine.hyroid hormone tests are done to: 1  Find out what is causing an abnormal thyroid-stimulating hormone (TSH) test. 2  For more information, see the topic Thyroid-Stimulating Hormone (TSH) . 3  This is the most common reason for thyroid hormone tests. 4  Check how well treatment of thyroid disease is working.