A test for an allergic reaction in which a possible allergen is applied to a scratched area of skin.
- Only 50% of a group of individuals identified as latex allergic by both the skin-prick test and scratch test had IgE antibodies to latex by the RAST.
- A puncture, prick or scratch test checks for immediate allergic reactions to as many as 40 different substances at one time.
- Skin scratch tests, also called patch testing, are sometimes used to diagnose a food allergy.
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