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Level Checks - Thyroid Function

Thyroid Function

Check your thyroid function levels in Cardiff or Newport.

IGP Level Checks are a range of health screen and individual blood tests carefully selected by our iGP Clinicians. The tests provide easy access to low cost testing of your key biomarkers to help manage, maintain and improve your health.

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Level Checks Private Thydroid Blood Testing

How does it work?

Simply book your appointment online or by contacting us directly. At the time of booking, you will be emailed a pre-appointment questionnaire, which you can complete online. You will then visit an iGP clinic for your blood test (and physical examination if appropriate). Suitable for those over 18 years of age.


Choose your Level Check and book your appointment directly online or by calling 03456252252.


You will receive an email and SMS with appointment details.


Attend your appointment with an iGP clinician, where we will take health observations and samples.


Your report will be shared with you via our secure online portal within 2-3 days.

How will I get my results?

Following your appointment you will receive an electronic report clearly detailing your test results, how they compare to a healthy range, the implications and recommended next steps. Test result reports are shared via our secure patient portal, usually within 72 hours (results can take longer depending on the test you requested).

Randox Report

Level Check Testing & Health Screens

Please be aware that this is a testing/examination service only for you to take your results to your own clinician or by arranging a follow-up GP appointment with iGP. Results will not be interpreted without a follow-up GP appointment. However, results outside the standard testing range will be highlighted on your results. Your results will also include a link to book an online appointment if you wish to discuss your results with one of our doctors. There will be a £79 fee for this appointment, but the appointment is not required.

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Thyroid Function

Information: A blood test to identify Thyroid hormone levels and in turn how well your thyroid gland is functioning. This test is commonly used to identify underactive or overactive thyroid. Please use the book now button to book your appointment at IGP. Locations will be available as a dropdown option on the booking screen.

Test Details: Thyroid Stimulating Hormone, Free Thyroxine, Free Tri-iodothyronine, Anti-Thyroglobulin Antibody (Anti-Tg), Anti-Thyroid Peroxidase Antibody (Anti-TPO)

Important: Suitable for those >18 years of age.

Results: 72hrs

Cost: £129

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Level Checks - Thyroid Function Test Information

Thyroid Function Test

The thyroid is a small gland that lies in front of the trachea (windpipe). This butterfly-shaped gland is responsible for producing the hormones that regulate bodily functions such as your temperature and your heartbeat.

When your thyroid becomes overactive (hyperthyroidism), you can suffer from a range of unpleasant - and sometimes life-threatening - conditions. When your thyroid becomes underactive (hypothyroidism), the related symptoms can be equally as debilitating.

When your thyroid produces too many or too few hormones, you'll start to feel unwell in a number of ways. Your doctor will probably associate your symptoms with a thyroid problem and advise you to take a blood test.

If you're given treatment for an underactive thyroid following a blood test, you'll probably be required to take hormone replacement medication daily. You'll also be required to undergo regular blood tests until your doctor is satisfied the medicine you're taking is beginning to normalise your hormone levels.

If you're being treated for an overactive thyroid, you may be prescribed a drug that slows the production of hormones in the thyroid gland. If the problem persists, you might be recommended for radioiodine treatment, which destroys thyroid cells - thus slowing down the production of hormones.

What tests are included with the Thyroid Blood Test?

Test Type Included
Thyroid Stimulating Hormone (TSH)
Free Thyroxine (FT4)
Free Tri-iodothyronine (FT3)
Anti-Thyroglobulin Antibody (Anti-Tg)
Anti-Thyroid Peroxidase Antibody (Anti-TPO)

Do I Need a Thyroid Function Test?

The effects of an underactive or overactive thyroid can be far-reaching unless you receive medical treatment for the condition.

The symptoms of an overactive thyroid include:

  • Mood swings

  • Insomnia

  • Chronic tiredness

  • Weakness

  • Sensitivity to heat

  • A swollen neck

  • Twitching

  • Sudden weight loss

  • Palpitations

  • The symptoms of an underactive thyroid include:

  • Chronic fatigue

  • Sudden weight gain

  • Depression

  • Sensitivity to cold temperatures

  • Dryness of the skin

  • Aching muscles

  • What If I Need To Cancel?

    If you cancel your appointment 24 hours before it starts, then you will receive a full refund. However, If you cancel your appointment within the 24-hour period before the appointment is due, then you will be liable to pay the cost of the consultation. If you do need to reschedule please contact us as soon as possible.

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    Private GP Cardiff

    IGP's Private GP Clinic in Cardiff is our very own Healthcare Registered clinic conveniently located on the outskirts of Cardiff.

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    Private GP Carmarthen

    IGP provide Private GP Services from within Parc Dewi Sant in Swansea. Conveniently located and with free parking.

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    Private GP Newport

    IGP operate from a section of the St Joseph's Hospital in Newport. Allowing us to provide both Private GP and Nursing services.

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    Private GP Swansea

    IGP provide Private GP Services from within the Sancta Maria Hospital in Swansea. Conveniently located and with free parking.

    More Info
    Help & Support
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    We want to ensure that all of our patients receive the information they need to make an informed decision about their healthcare. If you have any questions or if you require assistance with anything, please let us know.

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