Milk Allergy Testing
View All TestsWhat Is Milk Allergy?
Cow's milk allergy (CMA) is an IgE-mediated immune response to proteins in cow's milk. It is one of the most common food allergies in young children, though many children outgrow it. In adults, it is less common but can persist.
It is important to distinguish milk allergy from lactose intolerance, which involves difficulty digesting lactose (milk sugar) and is not immune-mediated. Milk allergy involves the immune system reacting to milk proteins — primarily casein and whey.
Component testing can identify whether sensitisation is to heat-stable proteins (such as casein) or heat-labile proteins (such as alpha-lactalbumin), which may help inform dietary discussions with your specialist.
Milk Allergy vs Lactose Intolerance
| Feature | Milk Allergy | Lactose Intolerance |
|---|---|---|
| Mechanism | IgE-mediated immune response | Enzyme (lactase) deficiency |
| Trigger | Milk proteins (casein, whey) | Lactose (milk sugar) |
| Onset | Minutes to hours | 30 min to 2 hours |
| Severity | Can include anaphylaxis | GI discomfort, not life-threatening |
How Testing Works
Choose Your Test
Select from our range of allergy blood tests and book a convenient time at our South Kensington clinic. No GP referral needed.
Nurse Blood Draw
A qualified nurse takes a small blood sample at our clinic. The appointment is quick and straightforward.
Get Your Results
Results are sent directly to you, typically within a few working days. Share them with your GP or specialist to guide your next steps.
Recommended Tests for Milk Allergy
ALEX² Allergy Test (Venous)
Allergy Profile 1 (Food & Inhalants)
Allergy Profile 12 (Milk & Milk Proteins)
Allergy Profile 3 (Food)
Cow’s Milk Components
Total IgE
Why Choose a Diagnostic-Only Clinic?
Unlike clinics that provide both testing and treatment, our nurse-led service focuses solely on accurate diagnostic testing. Because we don't offer treatments or prescriptions, there is no commercial incentive to recommend unnecessary tests — just honest, impartial results you can trust.
Nurse-Led & Impartial
Our qualified nurses collect your sample — we don't prescribe, treat, or have any reason to upsell.
Results You Own
Your results are sent directly to you. Take them to your GP or a specialist to discuss what's best for your situation.
You Stay in Control
Understand your allergy profile, then decide with your healthcare professional what steps to take next.
Related Reading
Frequently Asked Questions
Can I still be allergic to milk if I can tolerate baked milk?
Some individuals with milk allergy can tolerate extensively heated (baked) milk products because heating denatures heat-labile whey proteins. Component testing for casein versus whey proteins may provide useful context for this discussion with your allergist.
Is goat's or sheep's milk safe if I'm allergic to cow's milk?
Not necessarily. There is significant cross-reactivity between cow, goat, and sheep milk proteins due to structural similarities. Your specialist can advise on safe alternatives based on your test results.
Do I need a GP referral for allergy testing?
No. You can book directly with our clinic without a GP referral. Simply choose your test and select a convenient appointment time. If you're unsure which test is right for your symptoms, our team can help guide your selection.
Do I need to stop taking antihistamines before a blood test?
No. Unlike skin prick testing, IgE blood tests are not affected by antihistamines or other allergy medications. You can continue taking your regular medications before your appointment.
What should I do with my results?
As a diagnostic-only clinic, we provide results directly to you. We recommend sharing them with your GP or allergist for interpretation and dietary management advice.
Get Detailed Milk Allergy Testing
Book a blood test at our South Kensington clinic
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