Thyroid Function Test
- TSH
- FT3
- FT4
Click here to add more tests to this pack
- Product Code: ThyroidFunctionTest1
- Availability: In Stock
Available Options
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$57.00
- Ex Tax: $57.00
Please note that patients taking Biotin (Vit B7) supplements may cause falsely high TSH/FT3/FT4 results, in particular FT3 .
This Thyroid Blood Test will test for the following hormones TSH, FT3 and FT4
TSH
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, diarrhea, 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.
Thyroid Tests - Private Blood and Hormone Testing across Australia
Once we receive your order, we email you a Pathology requestreferral within seconds. Print off and take to any of the Pathology centers onour 'collection centers' page. Appointments notnecessary in Pathology.
Fasting not required. ETA for results usually 24 hrs