Serum Ratio of Free Triiodothyronine to Thyroid-Stimulating Hormone: A Novel Index for Distinguishing Graves’ Disease From Autoimmune Thyroiditis
نویسندگان
چکیده
منابع مشابه
Differentiating Graves' disease from subacute thyroiditis using ratio of serum free triiodothyronine to free thyroxine
BACKGROUND The measurement of free thyroid hormone, instead of the total form, is more commonly used in current practice. We aimed to evaluate the usefulness of the ratio of serum free triiodothyronine (FT3, pg/mL) to free thyroxine (FT4, ng/dL) for differentiating Graves' disease from subacute thyroiditis. MATERIALS AND METHODS Medical records of thyrotoxic patients aged >15 years who had me...
متن کاملRatio of serum free triiodothyronine to free thyroxine in Graves' hyperthyroidism and thyrotoxicosis caused by painless thyroiditis.
The serum T3 to T4 ratio is a useful indicator for differentiating destruction-induced thyrotoxicosis from Graves' thyrotoxicosis. However, the usefulness of the serum free T3 (FT3) to free T4 (FT4) ratio is controversial. We therefore systematically evaluated the usefulness of this ratio, based on measurements made using two widely available commercial kits in two hospitals. Eighty-two untreat...
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Hypothyroidism is the most common endocrine disorder of canines, and up to 80% of cases result from autoimmune (lymphocytic) thyroiditis. The heritable nature of this disorder poses significant genetic implications for breeding stock. Thus, accurate diagnosis of the early compensatory stages of canine autoimmune thyroiditis leading up to hypothyroidism affords important genetic and clinical opt...
متن کاملThyroid iodine content and serum thyroid hormone levels in autoimmune thyroiditis: effect of iodide supplementation.
The relationship between thyroid iodine content (TIC) measured by x-ray fluorescence and serum TSH, T4, and T3 levels was investigated under iodide supplementation (0.5 mg/day for 1 to 9 mo). In five euthyroid control patients, whose TIC ranged from 2.5 to 14 mg, the TIC increased from 1.5 to 4 mg after 4 wk of treatment and had a tendency to plateau when the treatment was pursued. No significa...
متن کاملThyroid Hormone Excess: Graves’ Disease
Thyroid hormone excess due to any cause is state of thyrotoxicosis, whereas hyperthyroidism is a state of thyroid hormone excess due to hyperfunctioning of thyroid gland. The major causes of thyrotoxicosis include Graves’ disease, solitary toxic adenoma, and toxic multinodular goiter. In thyrotoxicosis, free hormone levels are invariably increased. The reverse is not true in that increased free...
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ژورنال
عنوان ژورنال: Frontiers in Endocrinology
سال: 2021
ISSN: 1664-2392
DOI: 10.3389/fendo.2020.620407