What should you know about getting allergy tested?

A clinician may choose a skin prick test, an allergy blood test, or another assessment based on your symptoms and medical history. Testing commonly considers triggers such as foods, medicines, dust mites, pets, or pollen. A result is not interpreted on its own: a positive reaction may show sensitisation without proving that the substance causes every symptom. The timing of symptoms, exposure pattern, examination, and other conditions all matter.

Write down when symptoms occur, what you were exposed to, what you ate, and any medicines taken around the episode. Tell the clinician about asthma, eczema, previous severe reactions, pregnancy, and medicines that could affect testing. Do not stop prescribed treatment unless the testing team gives you a specific plan. Depending on the suspected trigger, the result may support a discussion about allergic rhinitis, food allergy, pet allergy, or house dust mite allergy.

Seek emergency help for sudden trouble breathing, throat or tongue swelling, faintness, or widespread symptoms after an exposure; these can be features of anaphylaxis. Arrange medical review for recurring wheeze, persistent nasal or eye symptoms, or reactions that are becoming harder to predict. Testing should not delay urgent treatment of a severe reaction.

Which trigger is the test assessing? What could make the result misleading? Should any medicine be paused, and how will the result change my treatment plan?