How are IgE Allergietest and allergy related?

An IgE allergy test measures specific IgE antibodies against particular allergens (e.g., pollen, foods). These antibodies are central to type I hypersensitivity (immediate allergy). A positive result indicates sensitization, but not necessarily clinical allergy – many sensitized individuals remain asymptomatic. Diagnosis of allergy requires integrating test results with history and sometimes challenge tests. The test is useful when suspecting hay fever, asthma, or food allergies, but not recommended for general screening. False positives are common, especially for foods. Evidence: human-strong (clinical guidelines). Sources: none in provided context.