Health A-Z

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Harvard Medical School

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Diagnosis

Your doctor will examine you. He or she will feel your thyroid for signs of enlargement or abnormal lumps. He or she also may use a stethoscope to listen for increased blood flow into your thyroid gland.

Your doctor will check for additional signs of hyperthyroidism. These include:

  • Increased heart rate

  • Hand tremor

  • Brisk response to tapping with a reflex hammer

  • Excessive sweating

  • Muscle weakness

  • Protruding eyes

If your doctor suspects hyperthyroidism, he or she will order blood tests. These will check your levels of thyroid hormones.

Other diagnostic tests may include:

  • Blood tests to check levels of certain antibodies

  • An ultrasound of the thyroid

  • A thyroid scan

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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