How Do Doctors Test for Allergies?

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Parents

The doctor suspects that my son has allergies and recommended that we get him tested. What kind of tests should we expect?
- Polly

The two main types of allergy tests are skin tests and blood tests:

  • With a skin prick or scratch test, the skin is scratched or pricked with a tiny bit of liquid extract of an allergen (such as pollen or food). If the area swells up and becomes red (like a mosquito bite), the test is said to be positive, meaning that the child is allergic to that substance. Skin testing allows the doctor to see within about 15 minutes if a child is allergic to the substances tested.
  • A blood test may be used if a skin test can't be done. It takes a few days to get the results of blood tests.

Talk to your doctor or allergist about the specific test that will be done.

Reviewed by: Larissa Hirsch, MD
Date reviewed: April 2012



Related Resources

OrganizationNational Institutes of Health's National Institute of Allergy and Infectious Diseases (NIAID) The National Institute of Allergy and Infectious Diseases (NIAID) conducts and supports basic and applied research to better understand, treat, and ultimately prevent infectious, immunologic, and allergic diseases.
OrganizationAmerican Academy of Allergy, Asthma, and Immunology The American Academy of Allergy, Asthma, and Immunology offers up-to-date information and a find-an-allergist search tool.
Web SiteThe Food Allergy and Anaphylaxis Network (FAAN) The FAAN mession is to raise public awareness, provide advocacy and education and to advance research on behavior for all of those affected by food allergies and anaphylaxis.


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Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.

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