Definition of scratch test in US English:

scratch test


  • 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.’
    • ‘The allergy or allergies are identified usually through scratch tests.’
    • ‘She suspected that she had some food allergies so she went to the doctor to have a scratch test.’
    • ‘Skin scratch tests, also called patch testing, are sometimes used to diagnose a food allergy.’
    • ‘A puncture, prick or scratch test checks for immediate allergic reactions to as many as 40 different substances at one time.’