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  2. Thyroid function tests - Wikipedia

    en.wikipedia.org/wiki/Thyroid_function_tests

    The total T4 is less accurate due to the large amount of T4 that is bound. The total T3 is measured in clinical practice since the T3 has decreased amount that is bound as compared to T4. [citation needed] Reference ranges depend on the method of analysis. Results should always be interpreted using the range from the laboratory that performed ...

  3. Thyroid's secretory capacity - Wikipedia

    en.wikipedia.org/wiki/Thyroid's_secretory_capacity

    Thyroid's secretory capacity (G T, also referred to as thyroid's incretory capacity, maximum thyroid hormone output, T4 output or, if calculated from serum levels of thyrotropin and thyroxine, as SPINA-GT [a]) is the maximum stimulated amount of thyroxine that the thyroid can produce in a given time-unit (e.g. one second).

  4. Thyroid hormones - Wikipedia

    en.wikipedia.org/wiki/Thyroid_hormones

    Also in normal pregnancies, adequate levels of maternal thyroid hormone are vital in order to ensure thyroid hormone availability for the foetus and its developing brain. [88] Congenital hypothyroidism occurs in every 1 in 1600–3400 newborns with most being born asymptomatic and developing related symptoms weeks after birth.

  5. Thyroid-stimulating hormone - Wikipedia

    en.wikipedia.org/wiki/Thyroid-stimulating_hormone

    The therapeutic target range TSH level for patients on treatment ranges between 0.3 and 3.0 μIU/mL. [18] For hypothyroid patients on thyroxine, measurement of TSH alone is generally considered sufficient. An increase in TSH above the normal range indicates under-replacement or poor compliance with therapy.

  6. Hyperthyroidism - Wikipedia

    en.wikipedia.org/wiki/Hyperthyroidism

    People with hyperthyroid will typically "take up" higher than normal levels of radioiodine. Normal ranges for RAI uptake are from 10 to 30%. In addition to testing the TSH levels, many doctors test for T 3, Free T 3, T 4, and/or Free T 4 for more detailed results. Free T 4 is unbound to any protein in the blood.

  7. Thyrotroph Thyroid Hormone Sensitivity Index - Wikipedia

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

    The Thyrotroph Thyroid Hormone Sensitivity Index (abbreviated TTSI, also referred to as Thyrotroph T4 Resistance Index or TT4RI) is a calculated structure parameter of thyroid homeostasis. It was originally developed to deliver a method for fast screening for resistance to thyroid hormone.

  8. Thyroid hormone binding ratio - Wikipedia

    en.wikipedia.org/wiki/Thyroid_hormone_binding_ratio

    Thyroid hormone binding ratio (THBR) is a thyroid function test that measures the "uptake" of T3 or T4 tracer by thyroid-binding globulin (TBG) in a given serum sample. This provides an indirect and reciprocal estimate of the available binding sites on TBG within the sample. The results are then reported as a ratio to normal serum.

  9. Jostel's TSH index - Wikipedia

    en.wikipedia.org/wiki/Jostel's_TSH_index

    Percentiles for Jostel's TSH index (TSHI or JTI) along with reference ranges for thyroid's secretory capacity (SPINA-GT) and univariable reference ranges for thyrotropin (TSH) and free thyroxine (FT4), shown in the two-dimensional phase plane defined by serum concentrations of TSH and FT4.

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