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What Is Skin Testing for Allergies?
A scratch or skin prick test is a common way doctors find out more about a person's allergies.
How Do Doctors Test for Food Allergies?
Find out what the experts have to say.
Blood Test: Immunoglobulin E (IgE)
The immunoglobulin E (IgE) test is often performed as part of an initial screen for allergies. High IgE levels also may indicate a parasitic infection.
Blood Test: Allergen-Specific Immunoglobulin E (IgE)
This test is done to check for allergies to specific allergens. It's especially useful in kids who've had life-threatening reactions to a certain allergen and for whom a skin-prick test would be too dangerous.