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.
1 There is no scientific evidence to support IgG testing for the diagnosis of food allergies.  Patch Test. In patch testing, the allergen is taped to the personâs back for 48 hours. The skin is then examined 72 and 96 hours after the patch is removed.