This article lists the top 5 thyroid tests to discuss with your healthcare practitioner.
These thyroid blood tests are useful to check for potential thyroid problems as each test measures specific hormones in the blood.
Ideally you will get a complete thyroid panel done to evaluate thyroid stimulating hormone (TSH) along with free thyroxine T4 (FT4), free triiodothyronine (FT3), reverse triiodothyronine T3 (RT3), and thyroid antibodies.
What’s Included in a Complete Thyroid Panel
A complete thyroid panel provides invaluable insights into how your thyroid is functioning.
- Thyroid Stimulating Hormone (TSH): is produced by the pituitary gland in the brain. TSH is the primary hormone that stimulates thyroid hormone production by the thyroid gland.
- Free T4 (FT4) and Free T3 (FT3): This tells you how much of these thyroid hormones are ‘free’ and available to the body.
- Low FT3 can indicate under-conversion of T4 to T3. T3 acts on almost every cell and organ in the body. As a consequence low FT3 leads to a range of hypothyroid symptoms.
- Thyroid Antibodies: The #1 reason to test thyroid antibodies is that levels accurately reflect the degree of autoimmune stress within the thyroid.
- An autoimmune thyroid disorder creates inflammation which can lead to destruction, and loss of function of the thyroid.
- Reverse T3: If you’ve been under enormous stress, or have been feeling unwell for some time you should check reverse T3. In fact, I believe the reverse T3 blood test is essential to effectively diagnose, and manage hypothyroidism.
- Reverse T3 is an inhibitory hormone that triggers symptoms commonly associated with a sluggish thyroid. It’s important to know that only a specific test for reverse T3 can identify high levels in the blood.
- I explain the top five reasons why the body creates excess reverse T3 here on this blog post: The Top Five Reasons Why Your Body Creates Excess Reverse T3.
The Top 5 Thyroid Tests You Need To Know About
In summary, the top 5 thyroid tests includes:
- Thyroid stimulating hormone (TSH).
- Free T4 (FT4).
- Free T3 (FT3).
- Thyroid antibodies: thyroid peroxidase Abs (TPO Ab) and antithyroglobulin Abs (ATG Ab).
- Reverse T3 (RT3).
Comprehensive testing makes it easier to get a diagnosis so you may find it useful to take along this list of tests to discuss with your doctor. Interpreting the results requires a good understanding of how the thyroid works and the functions of thyroid hormones.
To get a reliable diagnosis your doctor will also take a full medical history, discuss your symptoms, and perform a physical examination of your neck.
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Please Note: The information presented on this post does not create a doctor-patient relationship and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment.
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