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Thyroid Function Blood Test

£89.00

A complete at-home thyroid blood test — TSH, Free T3, Free T4, both thyroid antibodies plus B12, folate, ferritin and vitamin D. UKAS-accredited UK lab. From £99.

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Description

The thyroid quietly sets your metabolism, energy and body composition — and a partial thyroid blood test can miss what matters. This panel measures thyroid function and thyroid antibodies, plus the nutrients whose symptoms overlap with thyroid symptoms.

We give you access to your data — not medical advice. This test returns laboratory results and general information only. It is not a diagnosis, a treatment or a clinical opinion. No clinician reviews or comments on your results before they reach you — you receive your numbers against standard reference ranges, and interpreting them is for you and your GP. If a result falls outside the reference range, or you feel unwell, contact your GP; in an emergency call 111 or 999. You must be 18 or over to order.

What this thyroid blood test measures

This panel measures 10 biomarkers across 4 areas, analysed in a UKAS-accredited UK laboratory. Every marker is listed in full below.

Thyroid function (3)

  • Free T4 — unbound thyroxine
  • Free T3 — unbound triiodothyronine
  • TSH — Thyroid Stimulating Hormone

Thyroid antibodies (2)

  • Thyroglobulin antibodies (TG Ab)
  • Thyroid peroxidase antibodies (TPO Ab)

Micronutrients (4)

  • Vitamin B12
  • Folate (serum)
  • Ferritin
  • Vitamin D

Inflammation (1)

  • CRP — C-Reactive Protein

Who this test is for

Anyone with persistent tiredness, unexplained weight change, cold sensitivity, hair changes or low mood who wants to investigate properly rather than guess. The nutrient markers overlap with our Vitamins and Iron tests, so this panel is a strong all-in-one for fatigue.

How the at-home test works

  1. Order online — we send a home sample-collection kit straight to your door.
  2. Collect at home — a simple finger-prick sample, following the clear step-by-step instructions in the kit.
  3. Post it back free — return your sample the same day in the prepaid Royal Mail envelope provided.
  4. UKAS-accredited analysis — processed in a CQC-registered, UKAS-accredited UK laboratory.
  5. Your private results — a clear, secure PDF report of your numbers, sent as soon as the laboratory reports them.

Getting a good sample first time

Finger-prick samples are occasionally rejected by the laboratory because there is too little blood or the sample is too old to test, which means starting again. Four things make that far less likely: collect in the morning, warm your hands first (run them under warm water and let them hang down for a minute), drink plenty of water beforehand, and post the sample back the same day you take it — never on a Friday or Saturday, so it does not sit in the postal system over a weekend.

Who should not use a home kit: if you take anticoagulants, have a bleeding or clotting disorder, or feel faint at the sight of blood, speak to your GP before testing and consider a clinic-collected panel instead. If bleeding does not stop after firm pressure, seek medical advice.

Understanding your results

Including both thyroid antibodies means you see whether an autoimmune process may be involved — something a basic TSH-only test can’t show. This test is for information and monitoring, not diagnosis; abnormal thyroid results should always be reviewed by a doctor. Your results are private. They are handled as confidential health data and delivered to you securely. They are shared only with our laboratory partner in order to process your test, and otherwise never without your consent.

Thyroid blood test — frequently asked questions

What is the best time to test my thyroid?

Morning collection is preferred, as TSH is typically highest early in the day. Fasting is not required.

Why test thyroid antibodies?

Antibody results are one of the inputs a doctor uses when considering autoimmune thyroid conditions such as Hashimoto’s. Only a doctor can diagnose this — measuring them gives your GP context that TSH alone does not provide.

Could my tiredness be nutrients rather than thyroid?

Often, yes — low B12, folate, ferritin or vitamin D cause very similar symptoms, which is why this panel includes them so you can see the fuller picture.

Is the home finger-prick test reliable for thyroid?

Yes, it is analysed in a UKAS-accredited UK laboratory to the same standard as a clinic sample.

How quickly are results returned?

Typicallysent as soon as the laboratory reports them of the lab receiving your sample.

Related: Vitamins Test · Iron Test · HRT Guide · All blood tests

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