A 37-year-old member asked:
what exactly is an allergy scratch test?
1 doctor answer
Dr. Jeffrey Rosch answered
48 years experience Allergy and Immunology
Best allergy test: Scratch or prick skin testing is the primary skin test method used by allergists. A drop of the material in question is put on the surface of the skin and a small pointed device is used to prick the skin surface exposing a very small amount of the material (antigen) to the subject. If the person has sufficient numbers of sensitive mast cell a hive appears due to histamine released = positive test.
Answered on Apr 2, 2014
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