• Thyroid

Thyroid Profile with Reverse T3

A thyroid blood test measuring TSH, free and total T4, free T3, thyroid antibodies and reverse T3, an inactive form of T3, for people asked for it by a practitioner.

What this test is for

The Thyroid Profile with Reverse T3 measures seven thyroid markers. It has everything in our Thyroid Profile with Antibodies: TSH, free T4, free T3, total T4, and TPO and thyroglobulin antibodies. It adds one marker, reverse T3 (rT3), an inactive form of T3 that the body makes from T4.

It suits people who have been asked for a reverse T3 result by a clinician or practitioner. NICE thyroid guidance (NG145) does not use reverse T3, so for most people the Thyroid Profile with Antibodies is the better fit. Samples are taken in our Hull clinic, by a nurse or with a home kit.

Your report shows each marker against its reference range. Reverse T3 can rise during illness, fasting or stress, so one result is hard to read on its own. A result outside the range can prompt a repeat test or a talk with your GP.

7Biomarkers
24–48hResults
  • 24–48h turnaround
  • Free return postage
  • NHS-standard laboratory

Book at our clinic

£254

One-off purchase · no subscriptionBase £234 + £20 collection

How would you like to take your sample?

You will confirm two statements, then continue to secure payment. A discount code can be entered before you pay.

Secure Stripe checkout · £254.00

Before you pay

Please confirm these statements

Both are required. We keep a record of them, with the date and time, on your order.

Read the Privacy Policy and Terms of Use. A copy of the terms is emailed to you with your order.

  • Free tracked delivery
  • Free return postage included
  • Results in 24–48h
  • Digital results with explanation

Your results are reviewed by our clinical team and delivered securely. All tests use NHS-standard laboratories.

Biomarkers included

7 markers measured

Join the syndicate

Health insights, delivered monthly.

Longevity, metabolic health, and performance — straight to your inbox.

By subscribing you agree to receive occasional emails from us. Unsubscribe any time.