Medical Tests UK

Easter Holiday Closure Announcement

Please note we will be closed for the Easter Holiday from 4 pm on Thursday 17th April and reopen at 9.30 am on Tuesday 22nd April. Please do not submit samples between the 16th and 21st April. Thank you.

Christmas opening times

We wish all our customers a very Happy and Peaceful Christmas and a Healthy New Year.
Thank you for your continued support during 2025.

We will be closed from 4 pm on Tuesday 23rd December and re open at 10 am on Monday 5th January 2026.

WELCOME TO SMART NUTRITION

Functional Medicine Health Tests with Expert Clinical Review
Wouldn’t it be good to know exactly what shape you’re in?

WELCOME TO SMART NUTRITION

Functional Medicine Health Tests.
Wouldn’t it be good to know exactly what shape you’re in?
See how easily you can discover the most suitable medical test for you.

SIBO TEST

DUTCH TEST

MICROBIOME
TEST

METHYLATION
TEST

TESTOSTERONE
TEST 

Medical Tests and Health Conditions

  • Specialist health testing and expert clinical review — together in one service.

  • We work with accredited UK and international laboratories, testing nutritional, digestive, hormonal and many other general health markers.

  • For UK clients, results are reviewed by a GMC-registered GP

  • For customers outside the UK, professional interpretation is provided by a suitably qualified nutritional therapist or clinician due to regulatory, licensing and jurisdictional considerations.

  • Our test packages are designed to support the assessment and monitoring of your health, providing meaningful information to inform conversations with our team or your own healthcare provider.

  • Some packages may be eligible for reimbursement through BUPA, HSA and PPP. Please check with your provider.

HOW IT WORKS

  1. Choose your test Browse our test menu or use the search box to find the right test for you.
  2. Collect and return your sample Once your kit arrives, follow the enclosed instructions to collect your sample and return it to the laboratory.
  3. Laboratory analysis Your sample is analysed by an accredited specialist laboratory using validated testing methods.
  4. Clinical review and results Your results are reviewed by a GMC-registered GP alongside the health information you provided. You then receive your complete report with personalised written commentary.
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*NEW* EASILY COMPARE OUR DIGESTIVE TESTS

Are you curious about the difference between a GI MAP and a Genova GI Effects or a GI 360? Perhaps you’re interested in understanding which test delves into your gut microbiome, or you’re seeking specific insights like Lactobacillus Acidophilus, candida yeast, or molds. Discover the answers you seek in our newly crafted comprehensive digestive test comparison table.

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WHAT IS FUNCTIONAL MEDICINE?

Functional medicine takes a comprehensive approach to understanding the origins of illness and aims to restore health by addressing individualised root causes, which may vary even among those with similar diagnoses.

Smart Nutrition uses functional medicine’s cutting-edge scientific testing to provide clients with an in-depth understanding of their personal health picture.

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EXCLUSIVE TO SMART NUTRITION - SMART SIBO TEST

As the leading UK SIBO test provider, we’ve conducted thousands of tests over 15 years. With results in just 5 working days, our test uses more breath samples, than most ensures accuracy. Plus, our expert team provides detailed comments with your results for comprehensive insights.

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BEST SELLER

Our Genetic Methylation Test is one of our best sellers. Find out if you can methylate efficiently. The test covers everything that the popular you tube star Gary Brecka’s 10X DNA test checks for but our test goes a few step further and checks for an extra 22 extra genes.

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VIEW MORE TESTS

REVIEWS

VM 27.4.25
Thank you for your e-mails, Sue and for responding to all my queries! (So often people only respond to part of what you have asked!)
SW
We are both thrilled with the help you gave ******* She is greatly improved and to my surprise is taking it all very seriously! Her skin is better, no dark circles around the eyes and no sugar highs and lows. Thank you so much.
VB
Hello Emma, Really enjoyed talking to you earlier – always feel you make so much sense and are very practical about things (and friendly).
ZK
The last few months have gone really well and I feel i’m able to continue alone. I also had some tests done with my GP and everything seems fine.
EA
I just wanted to say thank you for the all the support given, I have not felt as good as I feel now with myself in a long time. Much appreciated.
MG
Thank you for your email and reading / answering all my questions with most care and attention, your email is very reassuring and helpful.
HE 16.5.23
Just wanted to say a big thank you for all of your help through a very difficult time. I'm back eating everything now (have been for a while) which is amazing! And have weaned myself of needing any supplements. I really appreciate your had work and guidance technically but also helping me tune into my body and what it needs.
MP May 23
Thank you very much for writing to me. Lovely that you chose to. At Smart Nutrition you've all been very impressive. I've enjoyed doing the tests - feel I'm making progress.
SE 5.6.23
Many thanks for your email which superbly helps me towards understanding some of the results.
A.L. 4.7.23
Great, many thanks for an amazing service!.
KD
Thanks to your expertise and diligence in checking everything when the provisional diagnosis of SIBO didn't quite ring true with you, I was officially diagnosed with Exocrine pancreatic insufficiency (EPI) (after a second sample was taken for confirmation at the GP). I'm really grateful for you finding it as I don't know where I'd be otherwise!
JC 19.3.24
I just wanted to say thank you very much for the service you provide. It was such a relief to finally have an answer after years of digestive troubles. I have managed to get a prescription for Rifaximin from my GP (albeit only for twice a day dosing, not three times a day) and I’m combining it with garlic and ginger.
TW 19.4.24
Thank you for the prompt service and replies ! Happy I chose to go with you.
TC 31.7.24
I just want to say I had a great call with Louise who was extremely professional and knowledgeable about your products. She spoke very well about what you had to offer while not trying to push it too much, she just provided me with the information needed, the perfect balance. So I want to say thank you for that and acknowledge one of your staff members for her exemplary service.
SS 27.11.24
Dear Louise, I am pleased to make the acquaintance of you. So far, I have talked to many people in your team: Jesse, Sue, Birte and now it's you. Everyone is invariably supportive, service-oriented, responsive, kind and friendly.
TJ 31.3.25
Solid service with the 'Genetic Methylation Test 10X'. I've been telling a lot of people
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NEWS & ARTICLES

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Please do not return samples to the laboratories that may arrive after Wednesday 27th March and up to and including Monday 2nd April.

The laboratories are closed from the 28th March – 2nd April for the Easter Holiday.