The most common skin test is the skin prick test, also known as a scratch test. This test is used to diagnose allergies by introducing small amounts of suspected allergens to the skin. The test involves pricking or scratching the skin with a tiny amount of the allergen, then observing the reaction. If the person is allergic, the skin will become red, itchy, and swollen.
Other Types of Skin Tests
While skin prick tests are the most common, other types of skin tests are available, including:
- Patch tests: These tests are used to diagnose allergic contact dermatitis. They involve applying a small amount of the suspected allergen to a patch of skin and leaving it on for 48 hours.
- Intradermal skin tests: These tests are used to diagnose allergies to certain substances, like insect stings. They involve injecting a small amount of the allergen into the skin.
References
- The skin prick test (SPT) is the most common test for the diagnosis of allergy.
- Allergy skin tests - Mayo Clinic
- Testing and Diagnosis - Find An Allergist Today | ACAAI Patient
- Allergy testing - skin Information | Mount Sinai - New York
- Allergy Testing: Purpose, Types, Indications & Results
- What Is Skin Testing for Allergies? (for Parents) | Nemours KidsHealth
- Food Allergy Testing: MedlinePlus Medical Test
