Lab test

Milk Allergy Test - Cow's Milk Allergy Test

A cow's milk allergy test uses a blood sample to measure allergen-specific IgE antibodies against proteins in cow's milk.

Typical price

From $49

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

A cow's milk allergy test uses a blood sample to measure allergen-specific IgE antibodies against proteins in cow's milk. This is an allergy test for an immune response to milk proteins and is different from lactose intolerance, which involves digestion of milk sugar. Cow's milk allergy is common in young children and can persist into adulthood. A provider may order the test after a reaction to milk or dairy, or as part of a broader food allergy panel. It is a screening tool interpreted with symptoms and history.

• Cow's milk-specific IgE Antibodies produced against cow's milk proteins; used to assess sensitization to cow's milk.

• People who develop hives, itching, or swelling after drinking milk or eating dairy
• Individuals with vomiting, diarrhea, or abdominal discomfort after milk
• Those with eczema or skin reactions that flare after milk products
• People who need to distinguish milk allergy from lactose intolerance
• Anyone being evaluated as part of a broader food allergy workup

• No fasting is required for this IgE allergy test
• The blood sample can be collected at any time of day
• Tell the provider about all medications you take
• No special diet is needed beforehand

Results are reported as an IgE level or class for cow's milk. An elevated value may indicate sensitization to milk proteins, but a positive result alone does not confirm a clinical allergy. A low or undetectable level makes a protein-based milk allergy less likely, though it does not address lactose intolerance, which is a separate condition. Because milk contains several proteins, a provider may consider testing specific components. Discuss results with a healthcare provider before changing your diet.

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