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4 Ιουν 2012 · A frequent clinical concern is the treatment of patients with normal T4 and T3 with suppressed TSH. An isolated low TSH is particularly common in older patients. Most clinicians will follow these patients, without treatment unless they are symptomatic.
23 Οκτ 2023 · Normal levels of free T4 range from 0.8–1.8 nanograms per deciliter (ng/dl) of blood. Normal T4 levels also vary across trimesters of pregnancy. A 2011 study in the Journal of Thyroid...
10 Δεκ 2022 · The symptoms of hypothyroidism depend on the severity of the condition. Problems tend to develop slowly, often over several years. At first, you may barely notice the symptoms of hypothyroidism, such as fatigue and weight gain. Or you may think they are just part of getting older.
15 Μαρ 2017 · Currently, an increasing number of older people are diagnosed with a mild under-active thyroid (subclinical hypothyroidism) when their blood thyroid hormone levels (T3 and T4) are normal and their TSH levels are high.
8 Φεβ 2019 · Accordingly, overt hypothyroidism is defined as serum TSH concentrations above the reference range with low free T4 levels, while subclinical hypothyroidism is diagnosed when TSH levels are high and circulating free T4 is normal.
3 Οκτ 2022 · If you have higher-than-normal T4 or free T4 levels, it could indicate thyrotoxicosis. This can result from several situations and conditions, including hyperthyroidism (overactive thyroid), thyroid inflammation ( thyroiditis ) and taking excessive amounts of thyroid medication.
According to the Whickham survey, the incidence of elevated TSH is about 7.6% in the general female population but rises to 17% in women over 70 years of age. The risk for developing hypothyroidism is 1.4/1000/year in women 18-24 years of age, 6.7/1000/year in women 65-74 years of age, and 14/1000/year in women 75-80 years of age [ 7 , 8 ].
