Casein Ab.IgE

This test detects IgE antibodies against casein, the primary protein in milk. A positive result indicates IgE-mediated milk allergy, distinct from lactose intolerance or milk protein sensitivity. True milk allergy triggers immediate immune reactions like hives, swelling, wheezing, or anaphylaxis within minutes to hours of consuming milk. This test is especially important for infants and children, as milk allergy is more common in early childhood. A positive result necessitates strict milk avoidance and carrying an epinephrine auto-injector if reactions are severe.