DNAblue Thyroid Genetic Traits

This DNA swab test looks at variations across 8 genes linked to thyroid hormone production, conversion and signalling. It suits people interested in genetic factors that may affect thyroid function, alongside other thyroid testing.

At-home test
Doctor reviewed

Sample: Swab
Collection: At-home swab sample by post
Results in: 35 days
Biomarkers: 8
Doctor reviewed: Yes

Compare Health Test Score 8-gene thyroid genetics swab, price unbenchmarked

£162.25

Buy now — £162.25

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Test specifications

Provider: Blue Horizon Medicals
Sample type: swab
Collection method: at-home swab sample by post
Turnaround time: 35 days
Biomarkers tested: 8
At-home test: Yes
Doctor reviewed: Yes
Gender focus: Both

About this test

This test looks at ten variations across eight genes the provider links to thyroid function, including DIO1 and DIO2 (involved in converting T4 to T3), COMT and FKBP5 (linked to stress hormone clearance and cortisol regulation), PDE8B and TSHR (involved in the thyroid's response to TSH), TNF-a (linked to inflammation) and TRHR (involved in the signal that triggers TSH release). The provider positions this as a way to understand genetic factors that may affect thyroid hormone production and conversion, alongside standard thyroid function testing rather than instead of it.

We do not currently have a comparable thyroid genetics test from another provider to benchmark the £162.25 price against. The sample is a simple at-home cheek swab sent by post, but results take around 35 days, one of the longest turnarounds in this catalogue.

It scores below the midpoint for clinical depth relative to other genetic and DNA tests we track, reflecting the eight genes covered, and around the middle for clarity, since the description covers the genes and traits in detail but not what the final report looks like. Value for money and collection convenience are both provisional scores, given there is no comparable test yet to benchmark price or convenience against.

Who is it for?

This suits you if you already have, or suspect, thyroid symptoms and want to explore genetic factors behind hormone conversion and signalling alongside standard thyroid blood tests, rather than as a stand-alone answer. Speak to your GP about ongoing thyroid symptoms rather than relying on this test alone.

No comparable thyroid genetics test from another provider appears in our data, so we cannot suggest a cheaper alternative.

How it works

You take a cheek swab sample at home and post it to the lab. Once it arrives, variations across the eight genes are analysed and the results are reviewed by a doctor before being sent back to you, typically within around 35 days.

Pros & cons

Pros

Just a cheek swab at home, no blood draw involved.
Covers ten variations across eight genes linked to thyroid function.
Explains the specific genes tested and what each is linked to.

Cons

Results take around 35 days, one of the longest turnarounds in this catalogue.
No comparable thyroid genetics test exists in our data to benchmark the price.
Doesn't specify what the final report format looks like.

Our editorial score

Compare Health Test Score 8-gene thyroid genetics swab, price unbenchmarked

Editorial confidence: 9.0/10

This £162.25 swab test examines ten variations across eight genes linked to thyroid hormone production and signalling, such as DIO1, DIO2 and TSHR. We do not have a comparable thyroid genetics test in our data to weigh the price against. It is done entirely from home, though results take around 35 days.

Score breakdown

Clarity and documentation 7.0/10

The listing publishes a detailed description, a stated turnaround, clear collection options, the sample type; it does not state the biomarkers measured, what the report looks like.
Clinical depth 5.7/10

8 biomarkers, placing it in the 29th percentile of genetic dna tests we track.
Collection convenience 7.0/10

A swab sample you take at home, no needle; results in around 35 days, slower than similar tests.
Results and follow-up 7.0/10

Results are reviewed by a doctor; the provider does not describe the report format.
Trust signals 7.5/10

Trustpilot 4.2 from 395 reviews; accredited lab (UKAS ISO 15189 partner labs); trading 17+ years.
Value for money 6.0/10

£162.25; no comparable tests to benchmark against yet.

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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