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  2. Hypothyroidism - Wikipedia

    en.wikipedia.org/wiki/Hypothyroidism

    Not enough TRH, which is uncommon, can lead to not enough TSH and thereby to not enough thyroid hormone production. [10] Pregnancy leads to marked changes in thyroid hormone physiology. The gland is increased in size by 10%, thyroxine production is increased by 50%, and iodine requirements are increased.

  3. Desiccated thyroid extract - Wikipedia

    en.wikipedia.org/wiki/Desiccated_thyroid_extract

    Side effects may occur from excessive doses. [1] This may include weight loss, fever, headache, anxiety, trouble sleeping, arrhythmias, and heart failure. [1] Other side effects may include allergic reactions. [1] Use in pregnancy and breastfeeding is generally safe. [2] Regular blood tests are recommended to verify the appropriateness of the ...

  4. 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.

  5. Thyroid disease - Wikipedia

    en.wikipedia.org/wiki/Thyroid_disease

    Screening for thyroid disease in patients without symptoms is a debated topic although commonly practiced in the United States. [8] If dysfunction of the thyroid is suspected, laboratory tests can help support or rule out thyroid disease. Initial blood tests often include thyroid-stimulating hormone (TSH) and free thyroxine (T4). [9]

  6. Thyroid hormones - Wikipedia

    en.wikipedia.org/wiki/Thyroid_hormones

    The major form of thyroid hormone in the blood is thyroxine (T 4), whose half-life of around one week [4] is longer than that of T 3. [5] In humans, the ratio of T 4 to T 3 released into the blood is approximately 14:1. [6] T 4 is converted to the active T 3 (three to four times more potent than T 4) within cells by deiodinases (5′-deiodinase).

  7. Thyroid disease in pregnancy - Wikipedia

    en.wikipedia.org/wiki/Thyroid_disease_in_pregnancy

    Thyroid hormone concentrations in blood are increased in pregnancy, partly due to the high levels of estrogen and due to the weak thyroid stimulating effects of human chorionic gonadotropin (hCG) that acts like TSH. Thyroxine (T4) levels rise from about 6–12 weeks, and peak by mid-gestation; reverse changes are seen with TSH.

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