IBS Specialists in London –  SIBO and Candida

Our team of  IBS specialists are dedicated to assisting patients with gut health issues including bloating, constipation, diarrhea, and Irritable Bowel Syndrome (IBS).

Many of our patients come to us after receiving an IBS diagnosis from the NHS, only to be told there is little more their GP can do beyond prescribing laxatives, Immodium, or Buscopan. We understand how frustrating and unacceptable this can be. You don’t have to continue struggling with these symptoms.

If you have had a series of tests on the NHS and been told everyting is ‘normal’, you should not give up. We can help you understand the root causes of your symptoms and work with you to develop a personalized plan to improve your digestive health and overall well-being. We offer testing for conditions such as small intestinal bacterial overgrowth, SIBO as well as GI-MAP tests to look at the Gut Microbiome and Candida.


How We Can Help You

We offer two primary services: Consultations  with IBS specialists and Gut health tests including Nutrition Tests.


The initial consultation is one hour  in length and can be conducted either at our Harley Street clinic or virtually via Zoom. This session will give you the opportunity to describe your symptoms in detail. We will ask you about your medical history and diet as well. This will help us dentify any potential causes of your symptoms.

After the consultation, you will receive personalized recommendations for dietary changes and supplements. Our areas of specialization include:

We are trained in Functional Medicine and may incorporate a variety of functional tests to assess gut health as well as  herbal supplements, and dietary advice into your treatment plan.

Diagnostic Testing for Gut Health

Tests can also be conducted without a consultation.

Some of the Gut Health tests we offer include:

  • Hydrogen Breath Test: To detect small intestinal bacterial overgrowth (SIBO)
  • GI-MAP Stool Tests: To identify imbalances in pathogens, including yeast (Candida), bacteria, and parasites
  • OATS Urine Test: To detect Candida
  • Blood Test: To identify food intolerances


Food Intolerance Testing

Wherever possible, our approach is to use functional medicine testing to help understand the underlying cause of your symptoms. We often use food intolerance blood tests.


SIBO testing

We also offer testing for Small Intestinal Bacterial Overgrowth. This can be carried out at the clinic or at home.


Weight Loss

If you are keen to lose weight, we can help you achieve your goals. We also offer a specialized weight loss plans (Metabolic Balance).

Other Laboratory tests

We also offer private laboratory tests including  vitamin and mineral blood screens to assess deficiencies.


Diagnostic Tests

We also provide parasite testing, Candida tests and SIBO testing for digestive disorders. We also provide vitamin and mineral testing and adrenal fatigue testing. If you need help ordering these tests please do not hesitate to call  us on 0345 1297996 or email us at help@nutritionandvitality.co.uk  We would be happy to help you choose the right test.

Nutrition Consultations

We also provide IBS consultations at our clinic in central London or via telephone for patients with digestive disorders (IBS) including Candida, SIBO, as well as offering specialized weight loss plans (Metabolic Balance). If you would like to book a consultation with a Candida or IBS specialist please e-mail us at help@nutritionandvitality.co.uk or call us on 0345 1297996.

Food Intolerance Tests

We offer professional IgG food intolerance blood testing at our clinic in central London.
This test measures 93 foods and also includes Candida Albicans. Please call us or email us if you would like to book an appointment.Read More »

Vitamin and Mineral Tests

We offer blood tests at our clinic in central London to assess your vitamin and mineral status.  We can test for all the B Vitamins including B12, Vitamin D, Vitamin  E, Calcium, Chromium, Iron, Magnesium, Selenium, Manganese and Zinc.

Read More »

Parasite Tests

Typical symptoms of a parasitic infection include diarrhoea, cramps, nausea and constipation. This non-invasive parasite test will examine more than 30 parasites as well as yeast, dysbiotic bacteria and friendly gut flora. Please see our parasite tests.

Read More »

Candida Tests

Typical symptoms of a Candida infection include brain fog, bloating, diarrhea, or constipation. Candida may be tested by blood, stool or urine. Please see our candida tests.

Read More »

Adrenal Stress Index Tests

If you are exhausted, suffer from insomnia and/or anxiety you may benefit from a simple test known as the adrenal stress index (ASI). This test enables the measurement of the stress hormones cortisol and DHEA. The Adrenal Stress Index is a saliva test that we can post to you.

Read More »

SIBO tests

SIBO  (Small Intestinal Bacterial Overgrowth) and refers to a condition in which there are extremely large amounts of bacteria present in the small intestine. The main symptoms of SIBO are similar to IBS – they include:
Belching, Burping, Diarrhea, Malabsorption, Gas, Flatulence and Constipation.
The SIBO test can be done via post or at the clinic in London.Read More »

IBS Specialists

Many of our patients book a consultation with us before carrying out any tests. During the consultation, we will discuss your symptoms in detail and may recommend dietary changes and herbal supplements to help you achieve your goals. We help patients with digestive problems including Irritable Bowel Syndrome, Candida, Leaky Gut, Weight loss, Parasite testing and Small Intestinal Bacterial overgrowth. Please visit our sister IBS Clinic

Patients who had Parasites
Patients with food intolerances
Patients with Candida

Best Selling Tests

Food Intolerance test – at central London Clinic


Our food intolerance test is  a professional blood test and covers 190 foods. The test is carried out at  our clinic in central London (nearest tube Great Portland Street or Oxford Circus) so that our nurse can take a blood sample. The cost of this test is £280.

This test is by appointment only with our nurse.

Our clinic is open 9.30-5pm  Monday to Thursday and from 9.30-2 pm on Friday.


The results  will take approximately 2-3 weeks.




Comprehensive Parasitology/Gut Pathogens test


 Comprehensive Parasitology Stool test

This test is ideal if you are concerned you may have picked up a parasite. In addition to parasites the test will examine yeast (Candida), Bacteria and friendly gut flora.

The parasites that are tested are:

Anisakis simplex
Ascaris lumbricoides
Balantidium coli
Blastocystis hominis
Capillaria hepatica
Capillaria philippinensis
Chilomastix mesnili
Clonorchis sinensis
Cryptosporidium parvum (EIA)
Dicrocoelium dendriticum
Dientamoeba fragilis
Diphyllobothrium latum
Dipylidium caninum
Echinostoma hortense
Echinostoma ilocanum
Endolimax nana
Entamoeba coli
Entamoeba hartmanni
Entamoeba histolytica/E dispar
Entamoeba polecki
Enterobius vermicularis
Enteromonas hominis
Fasciola hepatica
Fasciola hepatica/Fasciolopsis buski
Gastrodiscoides hominis
Giardia lamblia
Giardia lamblia (EIA)
Heterophyes heterophyes
Hookworm (Ancylostoma duodenale / Necator americanus) Hymenolepis diminuta
Hymenolepis nan

Iodamoeba butschlii
Isospora belli
Metagonimus yokogawai

Paragonimus westermani

Pentatrichomonas hominis

Phaneropsolus bonnei

Pygidiopsis summa

Retortamonas intestinalis

Schistosoma haematobium

Schistosoma jabonicum/mekongi

Schistosoma japonicum

Schistosoma mansoni

Strongyloides stercoralis

Taenia spp

Toxocara canis


Trichuris trichiura



Comprehensive Stool Analysis/GI map


Please fill in the contact form below, or  e-mail us at help@nutritionandvitality.co.uk  or call us on 0345 129 7996 if you wish to order this test and we will send you a payment link.



Specifically the GI Map Comprehensive Stool Analysis (CSA)  measures the following markers:

  • The status of Beneficial bacteria, including Lactobacillus spp. and Bifidobacterium spp.
  • Dysbiotic or foreign bacteria
  • The presence of any Parasites, including Giardia lamblia and Cryptosporidium
  • Yeast/fungal overgrowth, commonly referred to as Candida albican
  • Digestion of food, which indicates absorption status of nutrients
  • IBD markers identifying underlying inflammation associated with Inflammatory Bowel Disease including Calprotectin
  • Secretory IgA. Deficiency of SIgA is the most common immuno-deficiency marker
  • Occult blood


Laboratory Testing

We can post most test kits to you. This allows us to work with clients all over the UK and Europe.

Experienced Professionals

Nutrition and Vitality is dedicated to providing excellence in private laboratory testing and in Nutritional Therapy. We combine private consultations offering expertise in digestive disorders including irritable bowel syndrome, weight loss, food intolerance and parasite testing.  We aim to offer the  best laboratory testing, using the most innovative and reliable distributors across the world.

Laboratory Accreditation

It is of paramount importance that test results are  of the highest quality, accurate and reliable. For this reason, we have selected the most dependable labs, that are licensed across the world including Genova Diagnostics, Regenerus Labs, Doctors Data, Great Plains and Biolab.

We always aim to provide support service to help our clients along the way.

Accurate and Reliable Testing

Our mission is to provide patients with accurate and reliable testing services and consultations to help them regain their health.

Excellent Customer Care

We offer dedicated customer support to  assist you with any questions about completing tests and the interpretation of results.

We answer both technical and non-technical questions concerning test kits, test kit orders, test products, procedures, instructions, and status of test orders.

  • We are available by phone 9:00 AM ─ 5:00 PM, Monday through Friday at 0345 1297996
  • We can also be reached by e-mail.

Located in Central London

Our clinic is located in central London, very close to Harley Street. We are a 5 minute walk from Regent’s Park, Great Portland Street or a 10 minute walk from Oxford Circus.

Positive Reviews

We are proud to have many positive reviews.  Please read our testimonials and google reviews.