Definition

Noun: A diagnostic procedure in which small amounts of potential allergens are applied to superficial scratches made on a person's skin to observe and determine allergic reactions.

Usage

The term "scratch test" is used specifically in medical and allergology contexts to describe a common method for identifying specific allergens that cause a person's allergic symptoms. It is a type of skin prick test.

Examples

• The allergist performed a scratch test to see if I was allergic to pollen or pet dander.
• A positive reaction during the scratch test, such as redness or swelling, indicates a likely allergy to that substance.
• Before prescribing medication, the doctor recommended a scratch test to rule out certain environmental allergies.

Advanced Usage

• "to undergo a scratch test": to have the test performed on oneself.
  • The patient had to undergo a series of scratch tests to identify the cause of her hives.
• "scratch test results": the findings or outcome of the test.
  • The scratch test results confirmed an allergy to dust mites.

Variants and Related Words

• Skin prick test (n): A more general term often used synonymously with "scratch test," though techniques can vary slightly.
• Patch test (n): A different type of allergy test where allergens are applied to patches worn on the skin for 48 hours, typically for contact dermatitis.
• Intradermal test (n): An allergy test where a small amount of allergen is injected into the skin, often used if a scratch test is negative but suspicion remains high.

Synonyms

• Allergy skin test
• Prick test

Related Phrases

• Allergy testing: The broader category of diagnostic procedures that includes the scratch test.
• Diagnostic procedure: A general term for any test used to identify a disease or condition.

Noun

1. a test to determine allergic sensitivity to various substances by applying them to scratches in the skin