i-Screen i-Screen

Comprehensive Digestive Stool Analysis (CDSA) Level 4+

Type

Blood Testing

Biomarkers

69

Duration

30 min

Results

7 days

Most comprehensive stool assessment for digestive, absorption, metabolic, inflammation, and tumour/ulcer markers.

Allergy and food sensitivity testing measures your immune system's response to specific substances. IgE-mediated allergy tests detect true allergies — immediate immune reactions that can cause hives, swelling, breathing difficulty, or anaphylaxis. IgG food sensitivity tests measure delayed immune responses that may contribute to chronic symptoms like bloating, fatigue, headaches, or skin issues hours to days after eating trigger foods. While IgE allergy testing is well-established in clinical medicine, IgG food sensitivity testing is a growing area that many functional and integrative practitioners use as a guide for elimination diets. These tests can help identify triggers that are difficult to pinpoint through observation alone.

Key Details

Allergens Tested
20–200+ substances (varies by panel)
Fasting Required
No
Sample Type
Blood draw
Turnaround
5–10 business days
Common Use
Allergy mapping, elimination diet guidance

Who Is This For?

People experiencing unexplained digestive issues, skin problems, or chronic fatigue that may be food-related. Anyone with known allergies who wants comprehensive mapping of their triggers. Parents investigating potential food sensitivities in children. People considering an elimination diet and wanting data to guide which foods to remove.

What's Included

IgE and/or IgG antibody measurement
Panel of common allergens (varies by provider)
Results ranked by reactivity level

Preparation Required

No fasting required. Continue eating your normal diet for at least 2–4 weeks before testing — avoiding suspected trigger foods can cause false negatives. Inform the clinic of any antihistamines or immunosuppressants you're taking, as these can affect results.

Biomarkers Tested

69
Stool Colour observed

Brown is normal; other colors may indicate abnormal gastrointestinal conditions.

Stool Form observed

Variations may indicate abnormal gastrointestinal conditions.

Mucous observed

Mucous production may indicate infection, inflammation, or malignancy.

Faecal Occult Blood observed

Detects bleeding in the digestive tract, indicating potential disease.

pH pH units

Imbalances in gut pH influence short-chain fatty acid production and their effects.

Red blood cells detected/not detected

Presence may indicate infection, inflammation, or hemorrhage.

White Blood Cell Count × 10⁹/L

Measures the total number of white blood cells, your body's primary defense against infection. Elevated levels may indicate infection, inflammation, or immune disorders, while low levels can signal bone marrow problems or autoimmune conditions.

Food remnants observed

Presence may indicate maldigestion.

Meat fibres µg/g

Presence may indicate maldigestion from too little gastric acid or reduced pancreatic output.

Vegetable fibres µg/g

Presence may indicate maldigestion from gastric hypoacidity or diminished pancreatic output.

Fat globules µg/g

Elevated levels may indicate inadequate lipid absorption (steatorrhea).

Starch µg/g

Presence may indicate carbohydrate maldigestion.

Short Chain Fatty Acids, Putrefactive µg/g

Produced when anaerobic bacteria ferment undigested protein, indicating protein maldigestion.

Pancreatic Elastase µg/g

Assesses pancreatic exocrine function; levels reflect the activity of trypsin, chymotrypsin, amylase, and lipase.

Long Chain Fatty Acids µg/g

Elevated levels may indicate inadequate lipid absorption.

β-Glucuronidase µg/g

Enzyme that breaks down the bond between glucuronic acid and toxins; indicates potential toxin reabsorption.

Short Chain Fatty Acids, Beneficial µg/g

Produced by gut bacteria; numerous benefits for gut health.

Butyrate µg/g

Decreased levels may indicate inadequate colonic function.

Acetate µg/g

Decreased levels may indicate inadequate colonic function.

Propionate µg/g

Decreased levels may indicate inadequate colonic function.

Valerate µg/g

Plays important roles in maintaining gut health and overall well-being.

Faecal Calprotectin µg/g

This protein is released into the stool when the intestinal lining is damaged. It's usually very high in cases of Inflammatory Bowel Disease (such as Crohn's or ulcerative colitis), and low in IBS. Calprotectin is also elevated with gut infections and colon cancers.

Faecal Secretory IgA observed

Secreted by mucosal tissue; represents the first line of defense of the GI mucosa.

α-Transglutaminase IgA µg/g

Most sensitive and specific gluten intolerance test for celiac disease.

M2 Pyruvate Kinase µg/g

Key regulator of tumor metabolism; may assist in identifying gastrointestinal tumors.

H.Pylori antigen µg/g

Indicates presence of current H. pylori infection.

Bifidobacteria longum detected/not detected

Beneficial bacteria; essential for gut health.

Bifidobacteria bifidum detected/not detected

Beneficial bacteria; essential for gut health.

Bifidobacteria animalis detected/not detected

Beneficial bacteria; essential for gut health.

Bifidobacteria pseudocaten detected/not detected

Beneficial bacteria; essential for gut health.

Bifidobacteria breve detected/not detected

Beneficial bacteria; essential for gut health.

Eschericia coli detected/not detected

Most strains are harmless; some are pathogenic.

Lactobacilli plantarum detected/not detected

Beneficial bacteria; essential for gut health.

Lactobacilli rhamnosus detected/not detected

Beneficial bacteria; essential for gut health.

Lactobacilli paracasei detected/not detected

Beneficial bacteria; essential for gut health.

Lactobacilli casei detected/not detected

Beneficial bacteria; essential for gut health.

Lactobacilli acidophilus detected/not detected

Beneficial bacteria; essential for gut health.

Enterococci detected/not detected

Helps maintain microbiome balance.

Aeromonas detected/not detected

Aeromonas are bacteria that can cause an acute diarrhoeal illness.

Campylobacter detected/not detected

Campylobacter infection (campylobacteriosis) is a bacterial infection which most commonly causes gastroenteritis.

Salmonella detected/not detected

Salmonella infection usually results from ingestion of the bacteria from contaminated food, water or hands.

Shigella detected/not detected

Shigella infection (shigellosis) is a type of gastroenteritis caused by Shigella bacteria.

Yersinia detected/not detected

This infectious bacteria can cause gastroenteritis and symptoms beyond the gut.

Pseudomonas detected/not detected

Opportunistic pathogen found in various environments.

Streptococcus mitis detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus sanguinis detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus anginosus detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus parasanguinis detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus dysgalactiae detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus salivarius detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Streptococcus mutans detected/not detected

Common in gut flora; rarely implicated in gastric disease.

Enterococcus faecalis detected/not detected

E. faecalis is commonly found in the gut. In some cases E. faecalis can overgrow in the vagina and cause an infection, leading to symptoms such as abnormal vaginal discharge, odour, itching, and pain during sex or urination.

Enterococcus faecium detected/not detected

Part of normal gut flora; can be implicated in infections.

Enterococcus casseliflavus detected/not detected

Part of normal gut flora; can be implicated in infections.

Enterococcus durans detected/not detected

Part of normal gut flora; can be implicated in infections.

Mucoid Eschericia Coli detected/not detected

Most strains are harmless; some are pathogenic.

Enterobacter asburiae detected/not detected

Rarely associated with gastrointestinal infection.

Enterobacter kobei detected/not detected

Rarely associated with gastrointestinal infection.

Candida albicans detected/not detected

Candida albicans is a type of yeast that normally inhabits the vagina, but can sometimes overgrow and cause a yeast infection. This can occur due to factors such as antibiotic use, hormonal changes, or a weakened immune system. Symptoms may include itching, burning, and discharge.

Candida parapsilosis detected/not detected

C. parapsilosis can cause vaginal yeast infections, particularly in women who have received previous antifungal treatment. Symptoms may include itching, burning, and discharge. Treatment typically involves antifungal medications.

Candida glabrata detected/not detected

C. glabrata is a type of yeast that can cause vaginal yeast infections, particularly in women who are immunocompromised or have had antibiotics. Symptoms can include itching, burning, and discharge. C. glabrata can be more resistant to certain treatments compared to other Candida species.

Geotrichum detected/not detected

Yeast found in various environments; opportunistic pathogen.

Rhodotorula detected/not detected

Common environmental yeast; not considered pathogenic.

Other yeasts detected/not detected

Indicates potential yeast overgrowth.

Cryptosporidium detected/not detected

Cryptosporidium is a microscopic parasite that causes the diarrhoeal disease cryptosporidiosis.

Giardia lamblia detected/not detected

Symptoms of Giardia infection can occur with 3 to 25 days and may include diarrhoea, nausea, vomiting, pale greasy foul-smelling stools, stomach cramps, passing excess gas, bloating, weight loss and fatigue.

Entamoeba histolytica detected/not detected

Amoebiasis is a parasitic disease (also known as amoebic dysentery) caused by infection with Entamoeba histolytica.

Blastocystis hominis detected/not detected

Some research suggests that people with IBS may be more likely to have Blastocystis hominis organisms in their stool.

Dientamoeba fragilis detected/not detected

The bacteria can be present in the gut for months or year and misdiagnosed as IBS.

Frequently Asked Questions