This blood tests measures TSH, T3 Uptake, Thyroxine (T4), and Free Thyroxine Index.
A thyroid panel is a group of tests that are often ordered together to help evaluate thyroid gland function and to help diagnose thyroid disorders. The tests included in a thyroid panel measure the amount of thyroid hormones in your blood. These hormones are chemical substances that travel through the bloodstream and control or regulate your body's metabolism, how it functions and uses energy.
TSH is produced by the pituitary gland and is part of the body's feedback system to maintain stable amounts of the thyroid hormones T4 and T3 in the blood. When concentrations decrease in the blood, the pituitary is stimulated to release TSH. The TSH in turn stimulates the production and release of T4 and T3 by the thyroid gland. When the system is functioning normally, thyroid production turns on and off to maintain constant blood thyroid hormone levels.
Preparation: No special preparations on your part for this test. As with any blood draw, it is a good practice to drink water ahead of the draw so that you are well hydrated.
For more Information on any of your lab test results
- Consult your physician
- Review the information on the independent, non-profit web site: labtestsonline.org.
These are not intended as diagnostic comments, but only to give you sufficient information for further discussion with your physician. It is important that you promptly consult your physician regarding any abnormal findings.
code: 000620
Please enter your details below to search the lab nearest to you.
Health One Inc.|
111 Pennsylvania Avenue,
Falls Church, VA 22046
703.534.6766|
