Blood test more accurately labels peanut allergies

January 14, 2010 1:53:37 PM PST
Many children who test positive for sensitivity to peanuts may not have a true allergy to the food. Researchers looked at 79 8-year-olds who were labeled as being peanut sensitive by standard allergy testing. But, when the group underwent more extensive tests, only seven turned out to have true allergies.

Researchers say a newer type of blood test called component resoled diagnostics, or CRD, may be more accurate. A blood sample is exposed to specific peanut proteins and then antibody response is measured.

The company that makes this test provided some of the funding for the study, which is in this month's Journal of Allergy and Clinical Immunology.