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What happens when you get a patch test for allergies?

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When you get a patch test for allergies, your doctor could put an allergen on a patch and then stick that on your arm or back. You'll have to wear a patch for about 48 hours in case you have a delayed reaction to the allergen. A patch test takes more time than scratch and intradermal tests and requires two visits to the doctor.

SOURCES:

Asthma and Allergy Foundation of America: "Skin Testing to Diagnose Allergies."

American Academy of Family Physicians: "Allergy Testing."

Reviewed by Nayana Ambardekar on November 12, 2018

SOURCES:

Asthma and Allergy Foundation of America: "Skin Testing to Diagnose Allergies."

American Academy of Family Physicians: "Allergy Testing."

Reviewed by Nayana Ambardekar on November 12, 2018

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What do I need to do to prepare for a skin test for allergies?

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