Beta Lactoglobulin, F77

Beta Lactoglobulin (F77) is a major protein found in cow’s milk, which can cause allergic reactions in sensitive individuals. The test detects the presence of specific IgE antibodies against beta-lactoglobulin in the blood, indicating an allergy to cow’s milk or products containing this protein. This protein is highly stable at high temperatures and resistant to digestion, making it a persistent allergen in dairy products. Beta-lactoglobulin is the main cause of allergic reactions to cow’s milk, especially in young children and individuals with food sensitivities.

Role 

• Identification of cow’s milk allergy.
• Determination of the body’s sensitivity to beta-lactoglobulin.
• Assists in diagnosing food allergies and guiding appropriate dietary recommendations.

Indications

• Suspected allergy to cow’s milk or dairy products.
• Children with food allergy symptoms (eczema, hives, digestive disturbances).
• Assessment of immune response to dairy consumption.

Procedure

• Blood sample is collected from a vein.
• The sample is sent to the laboratory to detect specific IgE antibodies.
• Results are reported both qualitatively and quantitatively (IgE level).

Advantages

• Simple, minimally invasive test (blood sample only).
• Quick and accurate result for diagnosing cow’s milk allergy.
• Allows monitoring of sensitivity to beta-lactoglobulin over time.

Result interpretation

• Positive result: presence of specific IgE antibodies against beta-lactoglobulin, indicating sensitivity or allergy to cow’s milk.
• Negative result: specific IgE antibodies were not detected; allergy to beta-lactoglobulin is unlikely.