Milk allergy test

A clinician first asks what was eaten, how soon symptoms appeared, which symptoms occurred, and whether the reaction happened more than once. They may examine the skin and breathing, then choose a skin prick test, an allergy blood test, or both. These tests look for immune sensitisation to milk proteins; a positive result does not by itself prove that eating milk causes symptoms.

If the history and test results do not agree, a specialist may discuss a medically supervised oral food challenge. This involves controlled exposure in a setting prepared to treat a reaction. Testing can also help distinguish milk allergy from other explanations for symptoms. Learn more about [Food Allergy](/conditions/food-allergy/).

Keep a record of the food, portion, timing, symptoms, treatment used and recovery. Bring ingredient labels or photographs of the product when possible. Tell the clinician about asthma, eczema, other allergies, pregnancy, medicines and previous severe reactions. Do not deliberately eat milk to prepare for testing.

Some medicines can affect skin testing, so ask the testing service whether any should be paused and how to do that safely. Continue avoiding a suspected trigger as advised until the assessment is complete. Related allergic conditions include [Asthma](/conditions/asthma/) and [Allergic Rhinitis](/conditions/allergic-rhinitis/).

Do not wait for a test appointment if milk exposure causes breathing difficulty, throat or tongue swelling, widespread hives with weakness, repeated vomiting, fainting or sudden dizziness. Call emergency services and follow any existing plan. A previous mild reaction does not make a future reaction predictable; [Anaphylaxis](/conditions/anaphylaxis/) requires urgent action.

Ask which test fits your history, whether medicines affect the result, how to interpret a positive or negative finding, whether a supervised food challenge is appropriate, and how to stay nourished while avoiding milk.