Your doctor will ask questions about
medical history, do a
physical exam, and order medical tests to diagnose
If your doctor thinks
you may have hyperthyroidism, he or she may order:
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:
If you have
Graves' ophthalmopathy, your doctor may also do an
ultrasound, MRI, or a CT scan to look more closely at your eyes.
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
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