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Thyroid function tests (TFTs) is a collective term for blood tests used to check the function of the thyroid.
TFTs may be requested if a patient is thought to suffer from hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid), or to monitor the effectiveness of either thyroid-suppression or hormone replacement therapy. It is also requested routinely in conditions linked to thyroid disease, such as atrial fibrillation and anxiety disorder.
Private MD Lab Services offers the following tests to determine thyroid function:
What is a thyroid function test?
Thyroid function tests are a series of blood tests that can help diagnose thyroid disease and monitor its treatment. These tests can also be used to check your thyroid hormone levels before taking a medication that can affect its function or if you're undergoing hormone replacement therapy.
Thyroid hormones affect in a great manner how your body's metabolism works, so ensuring your thyroid is properly working is vital for your overall health.
How to test thyroid function?
A basic thyroid function test is a blood panel that includes:
- Free T4
- Free T3
- Thyroglobulin Antibodies
A more in-depth thyroid test can include:
- Reverse T3
- Free Thyroxine index
- T3 uptake
The relationship between these results can help you and your doctor better understand how well your thyroid functions and detect the need for further testing or treatment if abnormalities are found.
What does a thyroid function test show?
A thyroid function test can show if you have hyperthyroidism (overactive thyroid) or hypothyroidism (underactive thyroid), both common thyroid conditions that can be treated with medication.
Depending on your symptoms and previous results, you could also test for autoimmune thyroid issues like Hashimoto's or Grave's disease.
How often should you test your thyroid function?
Most people should get a basic measurement of their thyroid function once a year. If you have been previously diagnosed with a thyroid condition, your doctor may advise you to get tested more often to monitor your treatment.
Do I need to visit a doctor?
Nope. You don't need a doctor's visit to get a test with us.
How do I get my results?
You'll get your results via email as soon as they are available. We will notify you via SMS as well. You can also see them at any time in the future right in your dashboard where you can easily share them with your professional and compare them side by side with future tests.
Does my lab prescription expire?
We're the only lab that honors your lab order forever.