IntoleranceLab Reviews — What Customers Say, and What the Critics Say
IntoleranceLab has operated from Jarrow since 2017. This page links to source reviews and explains criticism of the category so you can make an informed decision.
Where you can read our reviews
We would rather point you at places we do not control than quote ourselves.
- Google — search “IntoleranceLab Jarrow”. Reviews there are tied to verified Google accounts and we cannot edit or remove them.
- Facebook — our page carries several hundred recommendations built up over the years, with a running percentage of people who would recommend us.
We ask every customer for a review after their results arrive. We do not offer anything in exchange, we do not screen people beforehand to see who is likely to be positive, and we do not ask anyone to mention anything in particular. If we did any of those things it would breach the platforms’ rules and, since April 2025, UK consumer law as well.
What the critics say — and they have a point
If you search our name you will find coverage from the BBC, Which? and the Guardian that is critical of at-home intolerance testing as a category. We are not going to pretend that does not exist, because you will find it anyway and you deserve to weigh it up properly.
Here is what those pieces get right:
- A hair screen is not a diagnostic test, and it is not endorsed by the NHS or the British Dietetic Association.
- There is no robust published evidence that screening hair can identify which foods suit a particular person.
- Nobody should use a screening report in place of seeing a GP about a persistent or worsening symptom.
We agree with every one of those statements. They are on our product pages too, not buried in the small print.
What the coverage sometimes misses is the distinction between a test that claims to tell you what is wrong with you, and a screening service that hands you a shortlist to try. We only claim the second. A typical weekly shop contains hundreds of ingredients; removing them one at a time to find a pattern takes months. What £49 buys is a narrower place to start, not an answer.
If that distinction does not persuade you, the honest advice is to keep your £49 and go to your GP, or work through an elimination approach with a registered dietitian. That route is free and it is the one the evidence supports.
What customers actually say
The themes that come up most often in the reviews we receive:
- Speed. Results in three working days from the sample arriving is faster than most people expect.
- Simplicity. No needles, no finger-prick, no kit to wait for — a few strands of hair in an envelope.
- A starting point. The most common positive comment is not “it cured me”, it is “I finally knew where to start”.
And the criticism that comes up most often:
- “The list was longer than I expected.” A screen flags everything at or above the 85% threshold, which can be a couple of dozen items. That is a lot to work through, and we could explain the elimination process better up front.
- “I did not see a change.” Some people trial the shortlist and notice nothing. That is a real outcome and it is exactly what the 90-day money-back guarantee is for.
If it does not work for you
Every order carries a 90-day money-back guarantee. Tell us within 90 days and we refund you. No interrogation, no requirement to prove anything.
We would rather refund someone than have them feel they were sold something that did not suit them.
Common questions
Are your reviews genuine?
They sit on third-party platforms we cannot edit. Read them there rather than taking our word for it.
Do you pay for reviews or offer incentives?
No. It breaches platform rules and UK consumer law, and it would make the reviews worthless anyway.
Do you delete negative reviews?
We cannot. Nor would we want to — a page of perfect scores tells a reader nothing.
Is IntoleranceLab a legitimate company?
Intolerancelab Limited, Companies House number 11049115, incorporated November 2017, registered for data protection with the ICO under ZC174378. We work from a real lab in Jarrow, Tyne and Wear.
Is this NHS approved?
No, and we would not claim otherwise. It is a wellness screening service.
This is a wellness screening service, not a diagnostic test. It is not NHS or BDA endorsed. What it gives you is a shortlist worth exploring — an elimination approach and a food diary are what actually demonstrate a link. If your symptoms are severe, persistent or getting worse, please see your GP.
Related
See the Gold screening — £49
90-day money-back guarantee. One-off payment, no subscription.
Wondering who is behind this? About IntoleranceLab — what the screen is, what it is not, and who runs it.
Need to reach us? Contact IntoleranceLab — email, company details and registered office.
