This blood test is ordered from Life Extension®. Their doctors prepare the test requests for you to take to a LabCorp location outside of Maryland for your blood draw. The test results go directly to you rather than to your doctor. Results are received quickly and the process is fairly smooth! The cost of this test is not going to be covered by insurance but submission to your FSA/HSA account is possible (not guaranteed). It might just be a PITA to try.
Our thyroid function lab test assesses all the basics, plus reverse T3, thyroglobulin antibody (ATA) and thyroid peroxidase antibody (TPO) to provide a detailed evaluation of the thyroid.
This panel contains the following tests:
- Thyroid-Stimulating Hormone (TSH) – Evaluates overall thyroid function
- Total Thyroxine (T4) – Measures the total amount of T4 produced by the thyroid gland
- Free Thyroxine (T4) – Measures the amount of T4 available to the cells and tissues
- Free Tri-iodothyronine (T3) – Measures the amount of T3 (the active form of the hormone) available to the cells and tissues
- Reverse T3 – Measures the non-functioning form of the active hormone T3
- Thyroglobulin antibody (ATA) – Often measured along with TPO, these antibodies can attack proteins involved in the production of thyroid hormones rendering them dysfunctional
- Thyroid Peroxidase antibody (TPO) – Often measured along with ATA, these antibodies can attack proteins involved in the production of thyroid hormones rendering them dysfunctional
Your thyroid gland sits in the lower portion of your neck and acts as the metabolic throttle for every cell in your body. When your thyroid doesn’t function efficiently, it can affect every cell in your body. An estimated 27 million Americans have thyroid disease, and about 13 million of them are undiagnosed. Since symptoms can often be vague such as fatigue, depression, and weight gain, many people are not tested for thyroid dysfunction.
- J Am Acad Nurse Pract. 2004 Oct;16(10):422-5.