Thyroid hormone tests are blood tests that check how well your
thyroid gland is working. The thyroid gland is a butterfly-shaped gland that
lies in front of your windpipe (trachea), just below your voice box (larynx).
The thyroid gland makes hormones that control the way your body uses energy
This test will give your doctor information about
your thyroid hormone levels. You may have hyperthyroidism when your thyroid
makes too much thyroid hormone. You may have hypothyroidism when your body does
not make enough thyroid hormone.
Thyroid hormone tests are done
Talk to your doctor
about all your health conditions before the test. For example, tell your doctor
about all medicines you take. If you are taking thyroid medicines, tell your
doctor when you took your last dose. You may need to stop taking thyroid
medicines for a short time before having this test.
A health professional will take a sample of your blood.
A newborn's heel is
pricked with a sharp, short needle (lancet). Then, several drops of blood are
collected for the test. Your child may have a tiny bruise where his or her heel
You can go back to your
usual activities right away.
Watch closely for
changes in your health, and be sure to contact your doctor or nurse call line if you have any
questions about this test.
Follow-up care is a key part of your treatment and safety. Be sure to make and go to all
appointments, and call your doctor or nurse call line if you are having problems. It's also a good
idea to keep a list of the medicines you take. Ask your doctor when you can
expect to have your test results.
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Current as of:
July 28, 2016
Adam Husney, MD - Family Medicine
& Kathleen Romito, MD - Family Medicine
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