Understand Your Genetic Response to Dairy From Home
This lactose intolerance DNA test is available across Canada and helps you understand how your body is genetically predisposed to digesting lactose, the natural sugar found in dairy products.
Instead of relying only on symptoms, this test analyzes your DNA using a simple at-home saliva sample, giving you long-term insight into how your body may process dairy. No clinic visit. No blood draw. No guesswork.
Ready to explore your genetics from home? View the totalPower test or browse all DNA testing products to find the best fit for your health goals.
Lactose intolerance happens when the body produces lower levels of lactase, the enzyme needed to digest lactose.
To simplify:
When lactase levels are lower, lactose may not be fully digested in the small intestine and can move into the gut, where it is fermented by bacteria. This process can be associated with digestive discomfort in some individuals after consuming dairy.
However, symptoms alone are not always enough to understand the underlying cause.
Lactose digestion is influenced by genetic variation in two key areas:
The LCT gene controls the production of lactase. Most humans naturally produce high levels of lactase in infancy, but in many people, production decreases over time.
The MCM6 gene helps regulate whether the LCT gene remains active in adulthood.
Certain variations in MCM6 are associated with:
This is not a disease marker. It is a normal genetic variation in human populations.
For additional reading on this topic, see: Managing Lactose Intolerance with the MCM6 Gene Variation.
Many Canadians try to understand lactose intolerance based only on symptoms, but this can be influenced by multiple factors including:
A genetic lactose intolerance test provides a different layer of information.
What it tells you:
What it does not tell you:
If you’re searching for a lactose intolerance test in Canada, there are a few approaches:
A saliva-based genetic test you complete at home.
Some people remove dairy temporarily and monitor how they feel.
Medical testing may assess lactose digestion at a specific point in time.
A DNA-based approach helps answer a different question.
Instead of asking, “Do I feel fine after dairy right now?”
It asks, “How is my body genetically built to process lactose over time?”
This can help guide long-term dietary decisions and awareness.
Looking for a broader DNA wellness option? The totalPower test offers a practical at-home starting point, and you can also explore DNA testing for more background on how this type of testing works.
Your results may help you understand:
Your genetic likelihood of producing lactase into adulthood.
Whether your DNA suggests a higher chance of lactose-related discomfort.
How your body may process dairy-related nutrients like calcium and vitamin D.
If you choose to reduce dairy intake, it may be helpful to be mindful of nutrients commonly found in dairy products:
These can also be obtained from a balanced diet including leafy greens, fortified foods, legumes, and fish.
This lactose intolerance DNA test is intended for informational and educational purposes only.
If you experience persistent digestive symptoms, consult a qualified healthcare professional.
Order your test kit in Canada
Collect a saliva sample using the included swab
Mail it back using the prepaid envelope
Receive your personalized genetic report
Your test can be completed entirely from home with a simple saliva sample and no clinic visit.
No needles, no bloodwork, and no complicated preparation.
Learn how your body may be genetically wired to process dairy over time.
The goal is to give you useful long-term awareness to support smarter dietary decisions.
Everything is completed from home, on your schedule.
Understanding your genetic relationship with lactose can help you make more informed decisions about your diet and overall wellness.
This test gives you a simple, science-based starting point to understand how your body may process dairy, based on your DNA.
Yes. In Canada, lactose intolerance can be assessed through clinical testing or genetic testing. A DNA-based test analyzes your inherited predisposition using a saliva sample collected at home.
The best test depends on your goal. Genetic testing shows lifelong predisposition, while clinical testing measures current digestion response. A DNA test is often used for long-term dietary awareness, while clinical tests focus on immediate symptoms.
A lactose intolerance test at home uses a saliva sample. You collect a cheek swab, send it to the lab, and receive a report explaining your genetic markers related to lactose digestion.
DNA cannot diagnose lactose intolerance, but it can identify genetic variations such as those in the MCM6 gene that are associated with reduced lactase production. This provides insight into genetic likelihood, not medical diagnosis.
The MCM6 gene influences whether the LCT gene continues producing lactase into adulthood. Variations in this gene are associated with differences in how people digest dairy as they age.
In many cases, yes. Lactose digestion ability is strongly influenced by genetics, particularly variations affecting lactase production over time.
No. This is an informational genetic test designed to support lifestyle and dietary awareness, not to diagnose or treat medical conditions.
