Thyroid Function Test (T3, T4 and TSH)

What is Thyroid Function test?

An examination of the thyroid’s function is called a thyroid function test. Patients may undergo TFTs if they suffer from hyperthyroidism or hypothyroidism, or to monitor their thyroid suppression or hormone replacement therapy’s effectiveness. 

The purpose of thyroid tests is to determine whether your thyroid is functioning properly and to determine whether you have hyperthyroidism or hypothyroidism. Thyroxine (T4) and triiodothyronine are produced by the thyroid, a little gland in your neck that resembles a butterfly (T3). Thyroid hormones influence almost every organ in the body and regulate how the body uses energy.


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Why is the Thyroid Test done?

Consider obtaining a thyroid test if you suspect your thyroid gland is hyperactive or underactive. Hypothyroidism is characterized by low levels of thyroid hormone, whereas hyperthyroidism is characterised by high levels of thyroid hormone in the blood. Thyroid examinations aid medical practitioners in the diagnosis of thyroid conditions such

  • Hyperthyroidism: increased thyroid hormone levels
  • Graves’ disease is the most frequent cause of hyperthyroidism.
  • Lack of thyroid hormones is a defining feature of hypothyroidism.
  • The most frequent cause of thyroid nodules, thyroid carcinoma, and hypothyroidism is Hashimoto’s disease, according to the NIH. outside link