Normal routine tests, but digestive symptoms continue?
Advanced digestive tests at Trust Medical Labs, including SIBO, GI-MAP and microbiome testing, can provide additional information when assessing bloating, diarrhoea, constipation or tiredness after meals, alongside your doctor's evaluation.
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Ask which test may suit you
Home collection options depend on the test and city
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A team to help you understand your testing options
Where should you start?Choose the symptoms that best match yours
We can help discuss the next step as part of a wider assessment.
Bloating and gas after meals
Persistent constipation with bloating
Persistent diarrhoea or irregular stools
Tiredness after meals or brain fog
Normal routine tests with continuing symptoms
Heartburn or stomach pain; possible H. pylori
Symptoms associated with wheat
Possible fungal imbalance or Candida
Rash or symptoms after particular foods
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This tool offers initial guidance only. It does not replace a doctor's assessment or diagnosis. Our team can help you discuss suitable options.
Contact us to discuss testing options
Our testsAdvanced Digestive Tests at Trust Medical Labs
Three-Gas SIBO Test
A home breath test measuring H₂, CH₄ and H₂S, gases assessed when investigating intestinal microbial overgrowth.
- Recurring bloating and gas
- Persistent constipation or diarrhoea
GI-MAP Gut Health Profile
An advanced stool test assessing selected bacteria, parasites and inflammation-related markers, with a broader panel than routine stool testing.
- Persistent digestive symptoms
- A broader gut health assessment
Microbiome Testing
Helps assess selected aspects of gut bacterial balance and may be considered alongside GI-MAP.
- Understanding bacterial balance
- Additional information alongside GI-MAP
Digestive Fungal Test (SIFO)
A stool test assessing fungi such as Candida in the digestive tract.
- Possible fungal imbalance
- Persistent digestive symptoms
H. pylori Urea Breath Test (UBT)
A breath test used to investigate H. pylori and assess eradication after treatment.
- Heartburn or stomach pain
- Recurring nausea
Food Sensitivity Testing
Testing offered to assess selected food-related markers when discussing symptoms such as bloating or tiredness after meals.
- Tiredness after meals
- Skin symptoms
Wheat-related Symptoms / Coeliac Testing
Helps investigate suspected coeliac disease when symptoms are associated with wheat.
- Symptoms after bread or wheat
- Unexplained iron deficiency
Calprotectin
Helps assess intestinal inflammation, particularly when investigating persistent diarrhoea.
- Persistent diarrhoea
- Recurring abdominal pain
How do SIBO, GI-MAP and microbiome tests differ?
| Test | Sample type | Helps assess |
|---|---|---|
| SIBO Breath Test | Breath (home collection) | Small intestinal bacterial overgrowth |
| GI-MAP | Stool | Selected bacteria, parasites, fungi and inflammatory markers |
| Microbiome Test | Stool (usually) | Gut bacterial balance |
| SIFO / Fungal Stool | Stool | Fungi such as Candida |
| UBT H. pylori | Breath | H. pylori infection |
| Calprotectin | Stool | Intestinal inflammation markers |
SIBO testing uses breath samples. The stool fungal assessment offered here uses a stool sample. These tests use different sample types and assess different markers.
Combined packagesDigestive Test Packages
Bloating and Gas Package
Three-gas SIBO testing plus H. pylori UBT, for discussion when investigating recurring bloating and possible H. pylori.
Advanced Gut Package
GI-MAP plus SIBO testing, offering additional information for assessment of persistent symptoms.
Persistent Diarrhoea Package
GI-MAP, calprotectin and coeliac testing for discussion when investigating persistent diarrhoea or irregular stools.
Post-Meal Tiredness Package
Food-related testing, coeliac testing and GI-MAP, for discussion when assessing tiredness or brain fog after meals.
Fungal and Digestive Package
The stool fungal assessment (SIFO) plus GI-MAP, for discussion when investigating fungi alongside persistent digestive symptoms.
Ask about a package suitable for your assessment
Unsure which test to discuss? Answer these questions so our team can help.
- 1 Is your main symptom bloating, diarrhoea, constipation, pain or tiredness after meals?
- 2 When did your symptoms begin?
- 3 Have you previously had stool tests or an endoscopy?
- 4 Do particular foods make symptoms worse?
- 5 Do you also have a rash, tiredness, sleep problems or brain fog?
Related articles and tests
- Three-Gas SIBO Test — Order a Home Kit
- GI-MAP Gut Health Profile
- Microbiome and Gut Bacteria Testing
- SIBO and SIFO: What Is the Difference?
- Bad Breath and SIBO
- SIBO, GI-MAP or Microbiome Testing? An Educational Comparison
- SIBO Testing in Riyadh
Digestive Testing FAQs
Do these tests replace a visit to the doctor?
Should I start with SIBO or GI-MAP?
Can I collect SIBO samples at home?
Is GI-MAP the same as a routine stool test?
Does the fungal test (SIFO) use breath samples?
Are the tests available outside Riyadh?
Do I need to fast?
Start Your Digestive Health Assessment
If symptoms persist despite routine tests, discuss whether further testing may be useful as part of a comprehensive medical assessment.