Guidelines for food allergy testing revised

Experts say the common skin-prick or blood tests shouldn't be used as a sole basis for deciding if someone has an allergy. 'There is a problem with overdiagnosis,' one doctor says.Physicians must be more rigorous about diagnosing food allergies and should not rely solely on skin-prick or blood tests to determine that a patient should avoid a particular food, according to guidelines issued Monday by a consortium of experts led by the National Institute of Allergy and Infectious Diseases.

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