Description
Dairy Intolerance Blood Test
If you often feel bloated, sluggish, foggy-headed, or notice skin breakouts after eating dairy products like milk, cheese, or yoghurt, it could be more than just a coincidence. You may have a dairy intolerance—and a blood test can help uncover it.
Unlike lactose intolerance, which is caused by difficulty digesting milk sugar, dairy intolerance involves an immune reaction to proteins in dairy, such as casein and whey.
These reactions are often delayed, meaning symptoms can appear hours or even days after consuming the food, making it difficult to identify the cause without testing.
A dairy intolerance blood test works by measuring levels of IgG antibodies in your blood. Raised IgG levels can indicate that your immune system is reacting to specific dairy proteins, potentially contributing to ongoing inflammation. This type of intolerance has been linked to a variety of symptoms including digestive discomfort, skin issues like acne or eczema, low energy, brain fog, and mood fluctuations.
Understanding whether dairy is a problem for your body can be life-changing. With a clearer picture of how your immune system responds to certain foods, you can make more informed choices, tailor your diet to support your wellbeing, and begin to feel more energised, balanced, and symptom-free.
Stop the guesswork—find out if dairy is standing in the way of feeling your best.
How often should I have a Dairy Intolerance Blood Test?
Most people only need a Dairy Intolerance Blood Test once—unless symptoms change or dairy is reintroduced after a long break.
It’s a smart way to get clarity and adjust your diet confidently.
Our Nurses visit your Home or Work to take your blood.
Pick a time and date to suit you.
Your results are available online within days of your blood being taken.
Other Questions
- Bloating, gas, or stomach pain
- Diarrhoea or constipation
- Headaches or migraines
- Fatigue or “brain fog”
- Skin rashes. Eczema or acne
- Joint pain or stiffness
- Mood changes
- Boiled milk
- Milk
- Cheddar cheese
- Parmesan cheese
- Cheese mould
- Sheep’s milk
- Goat’s milk
- Swiss cheese
- Casein
Take the blood test as early as possible if you experience bloating, fatigue, brain fog, or skin flare-ups after consuming dairy.
Collection method: Venous blood
Results available: 1-2 days after the sample has reached the laboratory.
IgG as a Biomarker
IgG (Immunoglobulin G) is an antibody that signals your immune system has been exposed to certain foods. In food intolerance testing, raised IgG levels may suggest your body is reacting to those foods, potentially causing delayed symptoms like bloating, fatigue, or skin issues. While not a diagnosis on its own, IgG is a helpful marker for identifying possible food sensitivities when reviewed alongside your symptoms and dietary habits.
How it Works
1. Order a Test
Order your test, and then Answer the Questions about why you’re taking that test.
Our nurse will contact you for dates, so they can take your blood sample at your home.
Our nurse will then send your sample to our laboratory.
2. Our laboratory team run the tests
Our skilled laboratory staff conduct your blood tests in a clean and secure environment, ensuring accuracy and reliability.
Each test follows strict protocols to maintain the highest quality standards.
3. Receive Your Results within 7 days
We will email you to inform you that your blood test results are ready.
The email will have a PDF report attached, sent directly to your inbox.
4. Monitor your levels over time
With regular ongoing tests and reports, you can track your results. The reports can be shared with your GP.
Check if you’re improving healthily or where changes could be made.
