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- Order your pathology tests below and Print out your pathology form
- Visit a Collection Center near you. No extra charges or Lab fees
- Results emailed to you within 24-48 hrs. Rarer tests may take longer
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How do you find out if you have Thyroid problems?
Many Australians live with a thyroid condition, with 4% having an undiagnosed thyroid disorder. Symptoms can range from low energy, insomnia, depression and unexplained weight gain.
Thyroid Function Blood Testing can help check your thyroid gland is working properly. With a simple blood test, you can check your Thyroid's hormone levels which is all that is needed for you to find out if you have a Thyroid problem like hypothyroidism.
Comprehensive Thyroid testing
Monitor thyroid function and check your Thyroid hormone levels. No Doctors/GP referral required. Confidential and Private Thyroid testing.
Below is a description of what is involved in each of the Thyroid Blood Tests.
A test for thyroid-stimulating hormone (TSH) is done to:
- Find out whether the thyroid gland is working properly.
- An underactive thyroid gland (hypothyroidism) can cause symptoms such as weight gain, tiredness, dry skin, constipation, a feeling of being too cold, or frequent menstrual periods.
- An overactive thyroid (hyperthyroidism) can cause symptoms such as weight loss, rapid heart rate, nervousness, diarrhoea, a feeling of being too hot, or irregular menstrual periods.
FT3 / FT4
The thyroid hormones Thyroxine (T4) and Triiodothyronine (T3) are produced and secreted by the thyroid gland.
Each molecule of T4 and T3 is made up of a protein and iodine (in the form of iodide). T4 contains 4 molecules of iodide and T3 contains 3 molecules of iodide – hence the names T4 and T3.
Thyroid hormones are the only compounds in the body that contain iodine. This is why dietary intake of iodine is important for thyroid health.
T4 is produced by the thyroid gland in much greater amounts than T3, around 90% more. This is because when T4 reaches organs and body tissue, it’s converted into T3.
So T4 is basically a stepping stone required for T3.
T3 is the active form of thyroid hormone in that it influences many body processes, in particular the regulation of metabolism.
RT3 is a metabolite of T4 (thyroxine). Typically, when T4 loses an atom of iodine—a process known as monodeiodination, or T4 to T3 conversion—it becomes triiodothyronine (T3), the active thyroid hormone. But in some cases, the body conserves energy by converting the T4 instead into RT3, an inactive form of T3 that is incapable of delivering oxygen and energy to the cells, as T3 does.
Thyroglobulin ab (TGab), Thyroperoxidase ab (TPO)
A Thyroid Antibodies test looks for several types of antibodies which the body develops when a person has an autoimmune disorder. This test looks for Thyroid Peroxidase and Antithyroglobulin antibodies. These antibodies mistakenly target and damage the tissues and proteins of the thyroid gland. The disruption of normal thyroid function this causes can lead to disorders such as Graves Disease or Hashimotos Thyroiditis.
This testing is typically ordered when someone has symptoms of a thyroid disorder or has had irregular results from other thyroid tests such as TSH, T4 and T3. It may also be used when someone has been diagnosed with a thyroid disorder to help monitor their treatment. Pregnant women with an autoimmune disorder often have a Thyroid Antibodies test to help determine if their infant may be at risk for thyroid dysfunction.