This is the perfect check to get an overall picture of your thyroid function. With tests for TSH, FT4 and FT3, find out if you have the right level of thyroid hormones for healthy metabolism.
Thyroid Monitoring Blood Test
About this test – Why take this test?
- You have symptoms which you think may be caused by an overactive or underactive thyroid
- You want to test both your thyroxine (T4) and your triiodothyronine (T3) to check that you are converting properly
- You are taking thyroid medication and you want a regular check of your hormone levels
This monitoring profile is an excellent test to assess thyroid function. It includes thyroid stimulating hormone (TSH) as well as free T4 (FT4) and free T3 (FT3). Most thyroid hormones are bound to proteins in the blood. This test measures the level of free or unbound thyroid hormones which are either available to be converted or are biologically active.
TSH is produced by the pituitary gland to stimulate the thyroid to produce thyroid hormones (mostly T4). An elevated TSH often signifies that the thyroid is struggling to produce enough T4 for the body’s needs. TSH on its own does not necessarily give a true picture of your thyroid function which is why we test both forms of thyroid hormone too.
Our tests are not a substitute for seeing your doctor, especially if you are suffering symptoms. We can arrange to have your results interpreted based on the information you have provided, but will not diagnose, consult or provide any treatment. (This incurs an additional cost and will need to be requested at time of ordering).
You will be advised to see your doctor.
The prices shown above do not include Phlebotomy fees.
Thyroid Stimulating Hormone (TSH) is produced in the pituitary gland and stimulates the thyroid gland to produce thyroid hormones thyroxine (T4) and triiodothyronine (T3).
High levels of TSH indicate an underactive thyroid while low levels indicate an overactive thyroid. In primary pituitary failure, a low TSH will be associated with an underactive thyroid.
Thyroxine (T4) is one of two hormones produced by the thyroid gland. Most T4 is bound to carrier proteins in the blood. This test measures the level of T4 which is free, or unbound, circulating in your blood.
High levels of free thyroxine can indicate an overactive thyroid while low levels can indicate an underactive thyroid.
Triiodothyronine (T3) is one of two thyroid hormones produced by the thyroid gland. Most T3 is bound to protein in the blood. Free T3 measures the level of T3 that is free, or unbound to protein, and is available to regulate metabolism.
How it Works:
Order your test. We will arrange for one of our trained phlebotomists to take your sample and send it to our accredited laboratory.
We will email you with your results within the specified turnaround times.
If you would like to make an enquiry or arrange a blood test can you please fill in the contact form below or call us on 01633 718001