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.
Next, the allergist may conduct tests to help identify a food allergy. While these tests alone do not always provide clear-cut answers, the allergist will combine your test results with the information given in your medical history to provide a diagnosis. These tests may include: 1  Skin prick test.2  Blood test. 3  Oral food challenge. 4  Trial elimination diet.ome may even increase the risk of an allergic reaction. The first step an allergist will take to diagnose a food allergy is a thorough medical history. The allergist will ask questions to determine if food allergy may be causing your symptoms and to identify the culprit food(s), and will then perform a physical exam.