Allergen,Individual-FoodBeta - Lactoglobulin- MilkMilk protein

Beta-lactoglobulin (BLG) is a protein found in cow's milk and a common allergen for those with milk allergies. A blood test can measure an individual's BLG specific immune response to identify a milk allergy. This test is helpful when someone experiences allergic reactions to milk but doctors need to confirm the culprit and differentiate it from lactose intolerance.

Luckily for those that are allergic to beta-lactoglobulin is that it is heat sensitive, meaning while they cannot have it cold, when it is cooked or baked the allergy is either not triggered or much more tolerable.

An allergy to b-lactoglobulin will cause a person to experience symptoms such as rash, itching, hives, swelling around the face or throat, nausea, cramps, diarrhea, and constipation when they consume milk or products containing milk.  Many people develop a milk allergy early in life.  Some people's allergies subside as they grow older but some persist into adulthood.

Written by: Supriya Kulkarni, Lead-Content & Training

Reviewed by : Dr. Alap Christry M.D. AVP-Lab Operations & Scientific Business Head-Clinical Chemistry