正常TSH值的範圍在0.5~5.0 mU/L;free T4在0.8~1.8 ng/dL之間,一般篩檢應先測量TSH 值,若是過高則再次測量TSH及free T4來判斷,反之則不檢查。若TSH過高(通常>10 mU/L3)且free T4過低,則認定是甲狀腺低下,應開始給予補充治療。劑量與療效監測則依所測量到的血清T4濃度進行調整。 藥物治療 主要治療藥品為口服...
由於TSH的敏感度遠高於T3、T4,因此一般體檢主要是以TSH來做篩檢。如果TSH偏低或偏高,而T3、T4正常,就稱為隱藏性甲狀腺機能亢進(低下)。此時患者並不會有上述甲狀腺 ...。
For instance, free T4 and TSH are usually tested if a healthcare provider suspects thyroid dysfunction due to disease of the pituitary gland or hypothalamus.18 Likewise, if the TSH is normal but a person still has symptoms of hyperthyroidism or hypothyroidism, free T4 may be checked. TSH is ...
3. Because more than 99% of T4 is bound to TBG, ultimately only a tiny fraction of less than 1% of free T4 is effectively the one that provides T3 for the organs and tissues of the body to use in their cells. Thyroid function ...
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The article examines the cause of low thyroid-stimulating hormone (TSH) level with a normal free T4 level. The decrease TSH level seen in subclinical hyperthyroidism is caused by the pituitary's response to minor elevations in serum or tissue T4 and T3 levels. In the evaluation and treatment ...
FT4 concentration was measured in serum at 12, 24 and 36 weeks with a solid-phase immunometric assay (IMMULITE Free T4). The inter-assay coefficients of variation for this technique were 6.7 % and 4.4 % at concentrations of 11.6 pmol/L and 31.5 pmol/L, respectively. TPO-Antibodies were ...
Given the prevalence of thyroid disorders and the subtle signs and symptoms which may accompany subclinical disease, reliable laboratory testing for serum TSH and free thyroid hormones is important for both primary care physicians and endocrinologists. The laboratory community has recognized the need for...
摘要: Background There is ongoing debate regarding the influence of minor changes in thyroid status within the normal range and body mass index (BMI). Overt thyroid dysfunction is well recognized to affect weight, but the influence of minor perturbations of thyroid function remains unclear....
The relationship between serum TSH and free T4 in older people. as a log-linear relationship of serum TSH to free thyroxine (T4); however, the validity of this hypothesis has yet to be established in older people... Clark,Penny,M.,... - 《Postgraduate Medical Journal》 被引量: 21发表...