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.
If done right, skin tests or blood tests are reliable and can rule in or out food allergy. Some people do test allergic to a food (by skin or blood testing) and yet have no symptoms when they eat that food. To confirm test results, your allergist may ask you to do a challenge test.