Allergy

Cow Milk Allergy Test (IgE) — Diagnose Milk Protein Allergy

Cow's milk allergy is one of the most common food allergies, especially in children. It occurs when the immune system reacts to proteins in cow's milk, primarily casein and whey. Symptoms can range from mild skin rashes and digestive discomfort to severe breathing difficulties and anaphylaxis. This IgE blood test helps confirm whether your symptoms are caused by an allergic reaction to milk proteins.

Why Test Cow Milk Allergy Test?

This test is recommended if you experience digestive symptoms such as cramps, bloating, or diarrhoea after consuming dairy, skin issues like eczema or rashes, breathing symptoms such as wheezing or nasal congestion, or if you need to diagnose children with suspected food allergies. It helps distinguish milk allergy from lactose intolerance, which is an enzyme deficiency rather than an immune reaction.

What Do High Cow Milk Allergy Test Levels Mean?

Elevated IgE levels indicate an allergic reaction to cow's milk proteins. This supports a diagnosis of cow's milk allergy and may explain symptoms like eczema, gastrointestinal distress, or respiratory problems after dairy consumption.

What Do Low Cow Milk Allergy Test Levels Mean?

Low or negative IgE levels make an IgE-mediated cow's milk allergy less likely. However, non-IgE-mediated reactions, such as lactose intolerance or other forms of milk hypersensitivity, may still cause symptoms after dairy consumption.

Symptoms to Watch For

  • Stomach pain, cramps, or bloating after dairy
  • Diarrhoea or vomiting after milk consumption
  • Eczema or skin rashes
  • Hives or itchy skin
  • Wheezing or nasal congestion
  • Swelling of the lips, tongue, or throat

Who Should Get Tested?

  • Children with suspected food allergies involving dairy
  • Adults with unexplained digestive symptoms after milk consumption
  • People with eczema or skin rashes possibly linked to dairy
  • Those who need to differentiate milk allergy from lactose intolerance

How to Prepare for Your Test

No special preparation is required. No fasting needed. Bring your ID to the sampling location. Bring valid ID to your appointment.

Order Your Blood Test

Test your Cow Milk Allergy Test levels with an accredited Swedish laboratory. Results within days, reviewed by Wellth.

Milk Protein / Casein Allergy Test →

Frequently Asked Questions

Is milk allergy the same as lactose intolerance?
No. Milk allergy is an immune reaction to milk proteins, whereas lactose intolerance is an inability to digest lactose (milk sugar) due to a lack of the enzyme lactase. They require different tests and management approaches.
Can children outgrow a cow milk allergy?
Yes. Many children outgrow cow's milk allergy by age 3 to 5, though some may retain sensitivity into adulthood. Regular follow-up testing can help determine if the allergy has resolved.
Does this test cover goat or sheep milk allergy?
This test is specific to cow's milk proteins. However, there is significant cross-reactivity between cow, goat, and sheep milk proteins, so a positive result may suggest sensitivity to other animal milks as well.
What should I avoid if I test positive?
You should consult a doctor or dietitian for a personalised elimination plan. Typical recommendations include avoiding cow's milk, cheese, yogurt, butter, cream, and any processed foods containing milk proteins.
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Wellth Team

Wellth

Our content is written and reviewed by Wellth, and fact-checked against peer-reviewed research and current Swedish clinical guidelines.

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Medical Disclaimer

The information on this page is provided for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment. Wellth provides health information and testing services but is not a substitute for clinical care. Always consult a qualified healthcare provider if you have questions about a medical condition. If you are experiencing severe or urgent symptoms, contact your doctor or call 1177 Vårdguiden. Blood test results should be interpreted by a qualified healthcare professional in the context of your complete medical history.