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The GI-MAP Test (Gastrointestinal Microbial Assay Plus) is an advanced stool-based analysis designed to assess the full gut microbiome, including bacteria, parasites, viruses, fungi, and key digestive and immune markers.

Using quantitative PCR (qPCR) DNA technology, this test identifies not only which microbes are present, but also their exact levels, providing a far more precise understanding of gut health than traditional stool testing.

This allows for a root-cause analysis of digestive issues, inflammation, immune dysfunction, and systemic health problems.

What This Test Measures

The GI-MAP is one of the most comprehensive gut tests available, covering:

1. Bacterial Pathogens (Infections)

Campylobacter
Clostridium difficile (Toxin A & B genes)
Enterohemorrhagic E. coli
E. coli O157
Enteroinvasive E. coli / Shigella
Enterotoxigenic E. coli (LT/ST)
Shiga toxin-producing E. coli (stx1, stx2)
Salmonella
Vibrio cholerae
Yersinia enterocolitica

Helicobacter pylori (H. pylori) + Virulence Factors

babA
cagA
dupA
iceA
oipA
vacA
virB
virD

👉 These markers indicate infection severity and pathogenic potential.

2. Parasitic Pathogens

Cryptosporidium
Entamoeba histolytica
Giardia

3. Viral Pathogens

Adenovirus 40/41
Norovirus GI
Norovirus GII

4. Commensal (Beneficial) Bacteria

Akkermansia muciniphila
Bacteroides fragilis
Bifidobacterium spp.
Clostridia (class)
Enterobacter spp.
Enterococcus spp.
Escherichia spp.
Faecalibacterium prausnitzii
Lactobacillus spp.

👉 These bacteria are essential for:

Gut lining integrity
Immune balance
Nutrient absorption

5. Microbiome Balance Markers

Bacteroidetes
Firmicutes
Firmicutes/Bacteroidetes ratio

👉 Key indicator of gut balance and metabolic health.

6. Opportunistic / Overgrowth Bacteria

Bacillus spp.
Enterococcus faecalis
Enterococcus faecium
Morganella spp.
Pseudomonas spp.
Pseudomonas aeruginosa
Staphylococcus spp.
Staphylococcus aureus
Streptococcus spp.
Methanobacteriaceae (family)

👉 Overgrowth here often indicates dysbiosis or gut imbalance.

7. Autoimmune-Associated Bacteria

Citrobacter spp.
Citrobacter freundii
Fusobacterium spp.
Klebsiella spp.
Klebsiella pneumoniae
Mycobacterium avium paratuberculosis
Prevotella spp.
Proteus spp.
Proteus mirabilis

👉 Linked to immune activation and chronic inflammation.

8. Fungi & Yeast

Candida species
Other fungal organisms

👉 Important for detecting yeast overgrowth and gut imbalance.

9. Immune Function Markers

Secretory IgA (sIgA)
Inflammatory markers

👉 Shows how your immune system is responding in the gut.

10. Digestive Function Markers

Pancreatic elastase
Fat digestion markers
Absorption indicators

👉 Evaluates how well your body:

Breaks down food
Absorbs nutrients

Why This Test Matters

Your gut is central to almost every system in the body.

Imbalances can contribute to:

Bloating, IBS, constipation, diarrhoea
Fatigue and brain fog
Skin issues (acne, eczema)
Hormonal imbalances
Autoimmune conditions

The GI-MAP provides quantitative, actionable data, allowing for targeted treatment rather than guesswork.

How This Test Works

Sample: Stool
Collection: At home
Method: qPCR DNA analysis
Turnaround: Typically 2–3 weeks

qPCR allows detection of very low levels of microbes, improving accuracy compared to traditional methods.

What Your Results Will Show

Presence of infections (bacterial, viral, parasitic)
Gut microbiome balance
Overgrowth or dysbiosis
Immune activity in the gut
Digestive efficiency

👉 This enables targeted protocols for gut repair and optimisation.

Who Should Take This Test

Digestive issues (IBS, bloating, constipation)
Chronic fatigue or brain fog
Skin conditions
Autoimmune diseases
Food intolerances
Hormonal imbalances
Longevity and optimisation clients

Why Choose London Blood Tests

Access to advanced functional gut testing
Home testing kits available
Combine with:
- Organic Acids Test
- Mycotoxin panels
- Hormone testing
Clear, structured reporting

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