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.
Skin tests. An allergy skin test is used to identify the substances that are causing your allergy symptoms. It involves applying an extract of an allergen to your skin, scratching or pricking the skin to allow exposure, and then evaluating the skin's reaction.he season in which your symptoms occur will narrow the list of possible causes. Your doctor may wish to perform skin testing to determine which allergens are causing your symptoms. A blood test for allergy can be obtained as an alternative, but this is not as sensitive as skin testing.