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  2. Thyrotroph Thyroid Hormone Sensitivity Index - Wikipedia

    en.wikipedia.org/wiki/Thyrotroph_Thyroid_Hormone...

    It is also beneficial for assessing the severity of already confirmed thyroid hormone resistance, [6] even on replacement therapy with L-T4, [7] and for monitoring the pituitary response to substitution therapy with thyromimetics (e.g. TRIAC) in RTH Beta. [8] In autoimmune thyroiditis the TTSI is moderately elevated. [9]

  3. Thyroid hormone resistance - Wikipedia

    en.wikipedia.org/wiki/Thyroid_hormone_resistance

    The syndrome can present with variable symptoms, even between members of the same family harboring the same mutation. [1] Typically most or all tissues are resistant to thyroid hormone, so despite raised measures of serum thyroid hormone the individual may appear euthyroid (have no symptoms of over- or underactivity of the thyroid gland).

  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

    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 ...

  6. Euthyroid sick syndrome - Wikipedia

    en.wikipedia.org/wiki/Euthyroid_sick_syndrome

    Affected patients may have normal, low, or slightly elevated TSH depending on the spectrum and phase of illness. Total T4 and T3 levels may be altered by binding protein abnormalities, and medications. Reverse T3 levels are generally increased, while FT3 is decreased. FT4 levels may have a transient increase, before becoming subnormal during ...

  7. 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. [47] [48] [49] 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. [47]

  8. Jostel's TSH index - Wikipedia

    en.wikipedia.org/wiki/Jostel's_TSH_index

    Jostel's TSH index (TSHI or JTI), also referred to as Jostel's thyrotropin index or Thyroid Function index (TFI), is a method for estimating the thyrotropic (i.e. thyroid stimulating) function of the anterior pituitary lobe in a quantitative way.

  9. 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 ...

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