Hyperthyroidism laboratory findings: Difference between revisions
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Revision as of 14:08, 28 August 2012
Hyperthyroidism Microchapters |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
Laboratory findings
A diagnosis is suspected through blood tests, by measuring the level of thyroid-stimulating hormone (TSH) in the blood. A low TSH (the job of TSH taken over by thyroid-stimulating immunoglobulin [TSI] that act like TSH) indicates increased levels of T4 and/or T3 in the blood. Measuring specific antibodies, such as anti-TSH-receptor antibodies in Graves' disease, may contribute to the diagnosis. In all patients with hyperthyroxinemia, scintigraphy is required in order to distinguish true hyperthyroidism from thyroiditis.