What happens during an allergy skin test?
You will most likely get tested by an allergist or a dermatologist. You may get one or more of the following allergy skin tests:
An allergy scratch test, also known as a skin prick test. During the test:
Your provider will place small drops of specific allergens at different spots on your skin.
Your provider will then lightly scratch or prick your skin through each drop.
If you are allergic to any allergens, you will develop a small red bump at the site or sites within about 15 to 20 minutes.
An intradermal test. During the test:
Your provider will use a tiny, thin needle to inject a small amount of allergen just below the skin surface.
Your provider will watch the site for a reaction.
This test is sometimes used if your allergy scratch test was negative, but your provider still thinks you have an allergy.
An allergy patch test. During the test:
A provider will place small patches on your skin. The patches look like adhesive bandages. They contain small amounts of specific allergens.
You'll wear the patches for 48 to 96 hours and then return to your provider's office.
Your provider will remove the patches and check for rashes or other reactions.
