Thyroid Health Blood Test

This test measures thyroid hormones (TSH, Free T4, Free T3) and thyroid antibodies (anti-TPO and anti-TG), along with vitamin D. Together, they provide a detailed picture of how well your thyroid gland is functioning and if an autoimmune component is present. 

 The presence of anti-thyroid peroxidase (TPO) and anti-thyroglobulin (anti-TG) antibodies can help to identify if autoimmunity is present, which can cause thyroid dysfunction.

Symptoms of an underactive thyroid typically include tiredness, weight gain, feeling cold, and low mood⁴. An overactive thyroid might cause weight loss, anxiety, a fast heartbeat, or difficulty sleeping⁵.

Vitamin D is crucial for the normal functioning of many organs, including the thyroid gland, and low vitamin D may contribute to fatigue or immune system dysfunction. Vitamin D deficiency is considered a risk factor for the development of many thyroid disorders, including autoimmune disease¹. 

No fasting is required for you to take this blood test. 

This test helps identify patterns consistent with thyroid disease, but a full diagnosis should be made in consultation with a healthcare professional based on your symptoms and medical history.

Yes, but let us know if you're taking thyroid hormones, as your results should be interpreted in that context.

The test can be taken at any time of day, but ideally in the morning. If you're on thyroid medication, speak to your doctor about the best timing.

You should receive your blood test results 3-5 working days after you post your blood samples.

You’ll get an email notifying you that your results have arrived in your Numan account, so keep an eye on your inbox so you don’t miss them. Additionally, you’ll receive a written review of your results from one of our clinicians, which you can read alongside your results to help you understand them.

Once they’re in your account, you can view your results any time you wish. You can also view them in-app and save your results as a PDF to help you keep track of them (and show them to your GP if need be).

Yes. It’s designed to be taken at home and we’ve included detailed instructions to help you through the process. We’ll also break down your results into simple, easy-to-understand language, so you’ll learn where you stand and how you can improve your health.

It’s generally a good idea to take your test every few months, but since every patient is different there’s no set timescale. If you’re unsure, you can ask our clinical team.

Each test is a finger-prick test, so you may feel a small scratch when you use the lancet provided with it to take a blood sample. This is only temporary, and any discomfort should subside swiftly afterwards.

Small changes to your biomarkers are normal and generally nothing to worry about. However, any significant changes in your health markers should prompt a discussion with a healthcare professional. They can provide context, possible explanations, and guidance.