alpha lactalbumin allergy test

This test detects IgE antibodies against beta-lactalbumin, a protein found in cow's milk. A positive result indicates a milk protein allergy, which is distinct from lactose intolerance. Symptoms of milk protein allergy can range from mild (itching, hives) to severe (anaphylaxis). This test is particularly important for infants and young children, but adults can develop milk allergies too. Identifying this specific milk protein helps guide dietary avoidance and treatment decisions.

This test detects IgE antibodies against alpha-lactalbumin, a major milk protein found in cow and some other mammalian milks. Unlike casein (the other main milk protein), alpha-lactalbumin is heat-sensitive and denatures during pasteurization, though some individuals remain allergic. A positive result indicates IgE-mediated milk allergy with sensitization to this specific protein. This test helps distinguish which milk proteins trigger allergic reactions and guides dairy avoidance and product selection.