of or relating to a vesicle or vesicles. 2. having the form of a vesicle. 3. characterized by or consisting of vesicles.
Types of Allergy Blood Tests. Allergy blood tests detect and measure the amount of allergen-specific antibodies in your blood. When you come into contact with an allergy trigger, known as an allergen, your body makes antibodies against it.llergy blood testing is recommended if you: 1  Are using a medicine known to interfere with test results and cannot stop taking it for a few days. 2  This would include antihistamines, steroids, and certain antidepressants.
IgG versus IgE Reactions. Testing for food allergies commonly involves serological tests to detect immunoglobulin G4 (IgG4), which is most likely to develop with exposure to food proteins. Blood IgG4 is tested against a number of foods using enzyme-linked immunosorbent assay.