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T4, T3 are frequently normal. TSH normal or slightly elevated. in autoimmune thyroiditis with thyrotoxicosis TSH is decreased under normal limits. increased response of TSH to TRH in subclinical or overtly hypothyroid patients. anti TPO – antibodies – 100 %. anti TG-antibodies – 90 %. TSH receptor blocking immunoglobulins – 15-20 % ................
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