Reverse T3 is a thyroid-related marker sometimes tested alongside Free T3, though the provider's own description notes debate over how useful it is for guiding treatment. It suits people who specifically want this marker rather than a standard thyroid panel.
1 biomarker as listed by Blue Horizon Medicals.
Reverse T3 is a substance the body produces alongside the active thyroid hormone Free T3. The provider's own description notes that its clinical role is debated: some see it as a marker of stress affecting thyroid function, while conventional endocrinologists generally do not use it to guide treatment decisions.
This test scores well for clarity, since the listing sets out a detailed description of the marker and clear collection options, but poorly for value for money, since £101.25 is more than double the £47.13 median we see across similarly sized thyroid tests. It also scores low on collection convenience and clinical depth, reflecting a long turnaround and a single biomarker that sits toward the lower end of the thyroid tests we track.
Samples for this test are sent to the USA for analysis, which the provider states is why turnaround runs to around 20 days. Results are reviewed by a doctor. Blue Horizon Medicals works with UKAS ISO 15189 partner labs and has traded since 2009.
This suits people who have specifically been advised to check Reverse T3, for example alongside a wider thyroid panel, and who are prepared to wait around 20 days for a result sent for analysis in the USA. Given the provider's own note that its clinical usefulness is debated, discuss the results with a GP or specialist rather than interpreting them alone.
We do not have a directly comparable named Reverse T3 test from another provider in our data, so we cannot point you to a faster or cheaper alternative.
This is a blood test taken by venous draw, either at a clinic (including Circle Hospital or Superdrug venues) or with a nurse home visit; there is no at-home collection option. Samples are sent to the USA for analysis, which the provider states extends turnaround to around 20 days; results are reviewed by a doctor before you receive them.
Reverse T3 is a single-marker thyroid test whose samples are sent to the USA for analysis, giving a long turnaround of around 20 days. At £101.25 it costs more than double the £47.13 median for similarly sized thyroid tests we track, and the provider's own description notes debate among endocrinologists over how clinically useful the marker is. Results are reviewed by a doctor.
The listing publishes a detailed description, the full biomarker list, a stated turnaround, clear collection options, the sample type; it does not state what the report looks like.
1 biomarkers, placing it in the 10th percentile of thyroid tests we track.
A blood sample taken at home by a visiting nurse or phlebotomist; with a venous or clinic option as well; a home nurse visit is offered; results in around 20 days, slower than similar tests.
Results are reviewed by a doctor; the provider does not describe the report format.
Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.
£101.25 against a median of £47.13 for the 16 similarly sized thyroid tests we track (+115%).
Calculated 13 September 2026 from the facts we hold about this test and provider, using our published scoring formula. Scores are not hand-edited.
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