Beta-lactoglobulin is a protein found in cow's milk, absent in breast milk. It is one of the most potent allergens among cow's milk proteins. Sensitization to it can develop even in the womb due to the consumption of dairy products during pregnancy or lactation. The protein is destroyed by boiling for 20 minutes.
Allergy to beta-lactoglobulin manifests with skin symptoms (rash, eczema, dermatitis), gastrointestinal disorders (abdominal pain, vomiting, diarrhea, bloating, constipation), and sometimes respiratory symptoms (cough, asthma attacks). Cross-reactivity with beef is possible.
IgG antibodies are often detected in food allergies, but their role is not fully understood. They may induce hypersensitivity reactions or act as blocking antibodies, reducing allergic symptoms. Detection of IgG antibodies to food allergens is used in addition to IgE to optimize diet and improve patient condition.
FEIA (Fluorescence Enzyme Immunoassay) – fluorescent enzyme immunoassay, quantitative determination of IgG to beta-lactoglobulin.
Please note that the research method and reference values may vary depending on the equipment and test systems used.