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2. Thyroid function tests - Wikipedia

   en.wikipedia.org/wiki/Thyroid_function_tests

   Thyroid function tests (TFTs) is a collective term for blood tests used to check the function of the thyroid. [1] TFTs may be requested if a patient is thought to suffer from hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid), or to monitor the effectiveness of either thyroid-suppression or hormone replacement therapy.

3. Thyroid-stimulating hormone - Wikipedia

   en.wikipedia.org/wiki/Thyroid-stimulating_hormone

   Any inappropriateness of measured values, for instance a low-normal TSH together with a low-normal T 4 may signal tertiary (central) disease and a TSH to TRH pathology. Elevated reverse T 3 (RT 3) together with low-normal TSH and low-normal T 3, T 4 values, which is regarded as indicative for euthyroid sick syndrome, may also have to be ...

4. Thyroid disease - Wikipedia

   en.wikipedia.org/wiki/Thyroid_disease

   TSH levels are determined by a classic negative feedback system in which high levels of T3 and T4 suppress the production of TSH, and low levels of T3 and T4 increase the production of TSH. TSH levels are thus often used by doctors as a screening test, where the first approach is to determine whether TSH is elevated, suppressed, or normal. [25 ...

5. Common thyroid drug levothyroxine linked to bone mass loss - AOL

   www.aol.com/lifestyle/common-thyroid-drug-levo...

   Hypothyroidism is diagnosed by looking at the free thyroxine (T4) levels in people with elevated TSH levels, and comparing the ratio between them. People with high TSH and low T4 get a diagnosis ...

6. Hypothyroidism - Wikipedia

   en.wikipedia.org/wiki/Hypothyroidism

   Subclinical hypothyroidism is a biochemical diagnosis characterized by an elevated serum TSH level, but with a normal serum free thyroxine level. [ 48 ] [ 49 ] [ 50 ] The incidence of subclinical hypothyroidism is estimated to be 3-15% and a higher incidence is seen in elderly people, females and those with lower iodine levels. [ 48 ]

7. Congenital hypothyroidism - Wikipedia

   en.wikipedia.org/wiki/Congenital_hypothyroidism

   If the TSH is high, or the T 4 low, the infant's doctor and parents are called and a referral to a pediatric endocrinologist is recommended to confirm the diagnosis and initiate treatment. A technetium (Tc-99m pertechnetate) thyroid scan detects a structurally abnormal gland, while a radioactive iodine (RAIU) exam identifies congenital absence ...