What should you know about infant dairy allergy test?

Cow's milk protein reactions can be immediate, with hives, swelling, vomiting, cough, or breathing symptoms, or delayed, with feeding difficulty, loose or bloody stools, eczema, or poor weight gain. A skin prick test or allergy blood test may support an immediate allergy, but a result is interpreted alongside the history. A negative or positive test does not by itself explain every feeding symptom. Delayed reactions may need a carefully planned dairy elimination followed by reintroduction under clinical guidance.

Write down what the infant ate, how much, when symptoms began, and how long they lasted. Bring details about formula, breastfeeding, supplements, eczema, stools, vomiting, and growth. Do not remove dairy from a breastfeeding parent's diet or change formula without professional advice, because an unplanned restriction can affect nutrition. Never test a suspected allergy by offering a large amount at home; the clinician can explain the safest method.

Call emergency services for breathing difficulty, facial or tongue swelling, collapse, extreme sleepiness, or repeated vomiting soon after a feed. These can be signs of a severe allergic reaction. Seek prompt clinical advice for blood in stools, persistent vomiting, dehydration, feeding refusal, or poor growth. Keep following the clinician's emergency plan if one has been supplied.

Ask whether the pattern fits Food Allergy, which test is useful, whether an elimination trial is appropriate, and how dairy can be replaced nutritionally. Ask when and how reintroduction should happen, and what to do if hives, vomiting, or breathing symptoms occur.