Digestive testing can investigate persistent bowel changes, abdominal symptoms, possible malabsorption or an abnormal previous result. Private celiac blood work, stool testing and breath testing can be arranged without a family doctor or gastroenterology referral.
Assessment before testing
Different tests assess different causes of bloating, pain, diarrhea or constipation. Dr. MacLeod reviews your symptom pattern, diet, medications, travel, previous investigations and testing priorities before recommending the available options.
Timing, stool pattern, associated symptoms and relevant exposures narrow the possibilities.
Some findings require primary, urgent or specialist medical assessment rather than private testing alone.
Recommended tests and any additional testing you want are reviewed together, including costs and limitations.
Tests selected by purpose
The same symptom can arise from different conditions. Each test below has a specific role and an important limitation.
What it helps assess
Possible test
Celiac serology
What it measures
Tissue transglutaminase IgA (tTG-IgA) with total IgA is commonly used for initial testing. Additional markers may be appropriate in selected circumstances.
Important limitation
Testing should be done while eating gluten. A positive result may require medical referral and small-bowel biopsy for confirmation.
What it helps assess
Possible test
Fecal calprotectin and blood markers
What it measures
Fecal calprotectin, CBC and C-reactive protein can contribute to distinguishing an inflammatory process from a functional bowel disorder.
Important limitation
An abnormal result does not identify the cause. Further medical assessment, imaging or endoscopy may be needed.
What it helps assess
Possible test
Targeted stool pathogen testing
What it measures
Testing may look for specific bacteria, parasites or viruses when the history includes acute or persistent diarrhea, travel, exposure or immune risk.
Important limitation
The panel should match the clinical history. Broad testing in the absence of a relevant exposure or symptom pattern can produce findings of uncertain significance.
What it helps assess
Possible test
Fecal elastase
What it measures
Fecal elastase is an initial test for suspected exocrine pancreatic insufficiency, particularly with greasy stool, weight loss, malabsorption or pancreatic risk factors.
Important limitation
The sample must be formed or semi-formed. Values below 100 µg/g support insufficiency; results from 100–200 µg/g are indeterminate.
What it helps assess
Possible test
Hydrogen and methane breath testing
What it measures
Breath samples are collected after a glucose or lactulose substrate to measure gases produced by intestinal microorganisms.
Important limitation
Preparation, substrate and intestinal transit affect results. False-positive and false-negative results occur, so testing is not appropriate for every person with bloating.
What it helps assess
Possible test
Selected qPCR stool analysis
What it measures
Some private panels use molecular methods to detect microbial DNA and may also report digestive or inflammatory markers.
Important limitation
Detecting DNA does not prove that an organism is alive, causing symptoms or requires treatment. Microbiome and “dysbiosis” findings do not have universally accepted clinical thresholds.
Interpreting private testing
Molecular stool panels can detect small amounts of microbial DNA. That analytical sensitivity must be distinguished from clinical significance.
A detected organism may represent colonization, transient passage or residual DNA rather than an active infection responsible for symptoms.
The quantity detected, symptoms, immune status, exposures and findings from established tests all affect interpretation.
An isolated molecular or microbiome result should not automatically lead to antimicrobial treatment or a restrictive diet.
Food-specific IgG panels and serum or stool zonulin testing are not offered here as diagnostic tests for food reactions or “leaky gut.” Food-related symptoms require a history-based assessment and, when appropriate, celiac testing, allergy evaluation, targeted breath testing or a structured elimination and reintroduction process.
Selecting tests
These are common reasons to consider digestive testing. The plan may use a focused test or a broader panel depending on your symptoms, previous investigations and preferences.
Private testing in Nova Scotia
A family doctor or gastroenterology referral is not required for private testing. Medical referral is recommended when the history, examination or results indicate that it is needed.
Symptoms, warning signs, diet, medications, exposures, previous investigations and testing priorities are reviewed.
A focused or broader testing plan is selected with you. Costs and all diet, medication or collection instructions are confirmed first.
Results are reviewed with their limitations, including whether confirmation or medical investigation is required.
Laboratory testing ordered through a naturopathic doctor is not covered by MSI. Some extended health plans may cover naturopathic appointments, but laboratory coverage varies.
Continue exploring
Yes. Comprehensive stool testing is one option, and more focused tests such as celiac blood work, fecal calprotectin, a targeted pathogen test, breath testing or fecal elastase may also be discussed. I will explain what each test can and cannot establish before you choose how to proceed.
Small intestinal bacterial overgrowth refers to an excessive number of microorganisms in the small intestine in a compatible clinical setting. Glucose or lactulose breath testing measures hydrogen and methane after a test substrate. Preparation and interpretation matter, and the test is not definitive in every case.
No. Celiac antibody testing and diagnostic biopsy are most accurate while gluten is still being eaten. Starting a gluten-free diet beforehand can produce a false-negative result. If you have already stopped gluten, discuss the situation before restarting it on your own.
There is no single, universally accepted laboratory definition of dysbiosis. A specialty panel may report organisms and selected digestive or inflammatory markers, but the findings must be interpreted cautiously and do not automatically establish the cause of symptoms.
No. Food-specific IgG generally indicates exposure to a food rather than a clinically meaningful intolerance. Food-related symptoms are assessed through the history and, when appropriate, celiac testing, allergy evaluation, targeted breath testing or a structured elimination and reintroduction process.
No family doctor or gastroenterology referral is required for private testing. However, warning signs or certain abnormal results may require referral for imaging, endoscopy, biopsy or other medical assessment that cannot be replaced by private laboratory testing.
Book an initial consultation to review your symptoms, previous investigations and the blood, stool or breath testing you would like to discuss.
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