Milk Allergy vs Lactose Intolerance: How to Tell the Difference & Test at Home
Bloating after a glass of milk? It could be lactose intolerance or a milk allergy. A milk allergy is an immune system reaction to milk proteins, while lactose intolerance is a digestive issue caused by insufficient lactase enzyme. The Milk Allergy Test from The Tester detects IgE antibodies against milk proteins in just 10 minutes.
What Is Milk Allergy?
Milk allergy is one of the most common food allergies, especially in children. The immune system mistakenly identifies milk proteins as harmful. It affects 2–3% of infants worldwide.
What Is Lactose Intolerance?
Lactose intolerance is not an immune response. It occurs when your body does not produce enough lactase enzyme. Affects up to 68% of the global population. Symptoms are dose-dependent.
Side-by-Side Comparison
| Feature | Milk Allergy | Lactose Intolerance |
| Cause | Immune reaction to milk proteins | Enzyme deficiency (lactase) |
| Severity | Can be life-threatening | Uncomfortable but not dangerous |
| Skin symptoms | Hives, eczema, swelling | Rare |
| Digestive symptoms | Vomiting, diarrhoea, cramps | Bloating, gas, diarrhoea |
| Treatment | Complete dairy avoidance | Limit lactose or take supplements |
Our Allergy Testing Range
| Product | Key Feature |
| Milk Allergy Test | Detects IgE antibodies to milk proteins, 98% accuracy |
| Gluten Allergy Self-test | Screens for coeliac-related antibodies |
| Egg Allergy Test | Detects egg protein antibodies |
| Food Allergy Test | Comprehensive food allergen screening |
| Extensive Allergy Test | Tests food + respiratory allergies |
| Allergy Self-test | General IgE screening |
Frequently Asked Questions
Can you have both milk allergy and lactose intolerance?
Yes, though uncommon. Start with a milk allergy test to rule out the immune component first.
Will my child outgrow a milk allergy?
Many children outgrow it by age 3–5. Those with high IgE levels may retain the allergy into adulthood.
Is goat’s milk safe if I have a cow’s milk allergy?
Not necessarily. Cross-reactivity is common. Consult your doctor before trying goat’s milk products.
How reliable is The Tester’s Milk Allergy Test?
With 98% sensitivity and 98% specificity, highly reliable for initial screening.
