 |
|
 |
 |
Tests & Procedures - Thyroid Function Tests |
|
|
Thyroid Function Tests
What are thyroid function tests?
Thyroid function tests are common procedures performed to determine how
well the thyroid is functioning. Some of the most common thyroid function
tests include the following:
- blood tests:
- to measure the level of thyroid-stimulating hormone in the blood
which helps determine thyroid function. High levels of the hormone
indicate an underactive thyroid.
- to measure levels of hormones thyroxine (T4) and triiodothyronine
(T3), and to measure a protein called thyroxine-binding globulin.
- ultrasound exam of the thyroid gland - to detect signs of growth and
other irregularities. (An ultrasound scan is a diagnostic technique
which uses high-frequency sound waves to create an image of the internal
organs.)
- thyroid scans using radioactive iodine or technetium (a radioactive
metallic element) - to reveal any physical abnormalities of the thyroid.
- functional stimulation tests - tests that help differentiate whether
the problem lies with the pituitary gland or the thyroid gland. One
such test includes injecting thyrotropin-releasing hormone and measuring
the pituitary's response.
Click here to view the
Online Resources page of this Web.
|
|
|
|
|
Family Medicine
Women's Center
Tests & Procedures