Blood tests are called ImmunoCap or RAST tests.
Patients who are predisposed to allergic reactions such as seasonal allergies, asthma, atopic dermatitis, have elevated levels of Ig-E antibodies against specific allergens. This test is much more accurate than the previously used RAST test. The ImmunoCap can determine the presence and the exact causes of one’s allergies. ImmunoCap is an FDA-approved test, and it is the gold standard of allergy testing. It helps doctors determine how patients should be treated, such as in terms of taking antibiotics, antihistamines, or steroids.