About Beta Lactoglobulin (BLG) Allergy Test

This IgE allergy test uses a blood sample to determine if you are allergic to Beta Lactoglobulin (b-lactoglobulin​/BLG), a major allergen in cow’s milk & whey.

The Beta Lactoglobulin (BLG) Allergy Test is a laboratory test. Your health care provider can explain what it measures and whether it is appropriate for your situation.

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How to prepare

Most lab tests require a blood or other sample. Follow any instructions given by your healthcare provider or the testing laboratory. Tell your provider about medications, supplements, or recent illnesses that might affect results.