Main Menu
Thyroid Function Test
£60.00
Your thyroid plays a vital role in how you feel every day. Our comprehensive thyroid function test measures TSH, Free T3, Free T4 and thyroid antibodies, with results available in as little as 24 hours — helping you understand whether an underactive or overactive thyroid could be affecting your health and wellbeing.
5 biomarkers measured: TSH, Free T3, Free T4, Anti-TPO and Anti-TG
Gain a clear picture of your thyroid function
Results within 24 hours from receipt of sample at labWhy should you test
Measure 5 key biomarkers linked to your thyroid function and gain a clearer picture of your thyroid health. An underactive thyroid can present as fatigue, weight gain, low mood, hair thinning and sensitivity to cold, while an overactive thyroid may cause symptoms such as weight loss, anxiety, palpitations and heat sensitivity. If any of these sound familiar, a Randox Health thyroid test gives you meaningful data you can act on.
What's Included
Customers Also Bought
Discovery
A convenient one-time snapshot of your current health status. Get personalised insights for up to 150 data points within just two hours of your sample arriving at our lab.
Everyman/ Everywoman
Our most popular plan delivering an entire year’s worth of insights, results for up to 150 data points, change tracking & personalised action plans.
Signature Platinum
Premium health insights with advanced testing of up to 350 biomarkers. Expert consultation with a GP and repeat testing after 6 months included.
Signature Prestige
Get premium health insights and detailed results for up to 350 biomarkers. Receive a personalised report with GP consultation.
What To Expect
Premium Clinics
Appointments are held in high-end, thoughtfully chosen locations - space designed for comfort and privacy.
Convenient Appointments
Easy online booking, clear communication and safe procedures, every step is smooth and reassuring.
Actionable Results
Insights that help you to take control and feel better. We are extremely proud of our short turnaround times and efficient laboratory processes, you will start receiving results as soon as they are available, however please note the turnaround time stated cannot always be guaranteed.
What To Know Before Your Appointment
Biotin (Vitamin B7)
Biotin (Vitamin B7) is a common component of many multivitamins and is also available as a standalone supplement. Biotin is known to interfere with laboratory testing and can affect various blood results. Unless prescribed by your Doctor, we recommend stopping supplementation at least 48 hours prior to testing. If the supplement has been prescribed, please speak with your Doctor before stopping.
Blood Sample Required
The appointment will include a blood draw. It is recommended to wear short or loose sleeves to make this easily accessible.
Stay Hydrated
Please ensure you are well hydrated prior to your appointment as being dehydrated may impact the blood draw.
Frequently Asked Questions
Here, you'll find answers to the most common questions about our services. Whether you're curious about booking an appointment, understanding your test results or learning more about our innovative health technologies, we've got you covered.
Your Health, Up to Date.
Our easy to interpret test report will provide a breakdown of your results, what they mean and the next steps you can take. Download the Randox Health app on iOS or Google Play and turn notifications on to find the status of your sample and get your results, as well as any app-exclusive promotional offers.
Additional Services
Mailing List
Find out about Randox Health new services, promotions and competitions first.Media
Follow Us
Get the App
© Copyright Randox Health London Ltd 2026. All rights Reserved.
Randox Health London Ltd uses the IP2Location LITE database for IP geolocation.