Allergy testing
Allergy Testing
Allergy testing is a method used to identify the substances causing an allergic reaction in an individual. It involves exposing a person to a small amount of an allergen and then observing the reaction.
Pronunciation
- UK: /ˈælədʒi ˈtɛstɪŋ/
- US: /ˈælərdʒi ˈtɛstɪŋ/
Etymology
The term "allergy testing" is derived from the Greek words "allos" meaning "other" and "ergon" meaning "work". The term "testing" comes from the Old French "test", meaning "small vessel used in assaying precious metals".
Types of Allergy Testing
There are several types of allergy testing, including:
- Skin prick test: This is the most common form of allergy testing. It involves pricking the skin with a small, sterile probe that contains a tiny amount of the allergen.
- Intradermal test: This test involves injecting a small amount of the allergen into the skin.
- Patch test: This test involves applying a patch to the skin that contains the allergen. The patch is usually left on for 48 hours.
- Blood test: This test involves taking a blood sample and testing it for specific antibodies to allergens.
Related Terms
- Allergen: A substance that causes an allergic reaction.
- Antibody: A protein produced by the body's immune system when it detects harmful substances.
- Immunoglobulin E (IgE): A type of antibody that is associated with allergic reactions.
- Hypersensitivity: An exaggerated or inappropriate immune response to a substance that is generally not harmful.
See Also
External links
- Medical encyclopedia article on Allergy testing
- Wikipedia's article - Allergy testing
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