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Hyperthyroidism
Exams and Tests
Your doctor will ask questions about your medical history, do a physical exam, and order medical tests to diagnose hyperthyroidism.
If your doctor thinks you may have hyperthyroidism, he or she may order:
Important It is possible that the main title of the report Graves' Disease is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Read the Graves' Disease article > >
- A thyroid-stimulating hormone (TSH) test, which is a blood test that measures your levels of TSH. If your TSH level is low, your doctor will want to do more tests.
- Thyroid hormone tests, which are blood tests to measure your levels of two types of thyroid hormones, called T3 and T4. If your thyroid hormone levels are high, you have hyperthyroidism.
When you are being treated for hyperthyroidism, your doctor will test your TSH and thyroid hormones several times a year to see how well your treatment is working.
After you are diagnosed with hyperthyroidism, your doctor may also want to do:
- An antithyroid antibody test to see if you have the kind of antibodies that attack thyroid tissue. This test can help diagnose Graves' disease and autoimmune thyroiditis.
- A radioactive thyroid scan and radioactive iodine uptake tests, which use radiation and a special camera to determine the cause of your hyperthyroidism.
If you have Graves' ophthalmopathy, your doctor may also do an ultrasound, MRI, or a CT scan to look more closely at your eyes.
Early Detection
It is not clear whether people who do not have any risk factors and who do not have any symptoms of hyperthyroidism need to be tested regularly for thyroid problems. The American Thyroid Association recommends that adults, particularly women, be screened for thyroid problems every 5 years, beginning at age 35. But the U.S. Preventive Services Task Force does not think there is enough evidence to recommend either for or against regular thyroid testing. Talk to your doctor about whether you need to be tested for thyroid problems.1, 2
WebMD Medical Reference from Healthwise
Last Updated:
February 10, 2010
This information is not intended to replace the advice of a doctor.
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