Which specialist performs allergy testing?

Testing is selected from the history of the reaction, the suspected trigger and the timing of symptoms. A specialist may use skin prick testing, blood testing or a supervised challenge when clinically appropriate. Results are interpreted alongside your symptoms; a positive result on its own does not always explain every reaction. A GP can review common patterns, check for other causes and refer you when the history is unclear, reactions are repeated or symptoms have been severe. Avoid broad self-ordered panels that test foods or substances you tolerate without a clear clinical reason.

Write down what you ate, touched or breathed before the reaction, how quickly symptoms appeared, which body areas were affected and what helped. Bring photographs of visible symptoms and a list of medicines, including antihistamines, because some medicines can affect test planning. Do not deliberately expose yourself to a suspected trigger to prove a reaction. The Allergy Testing page explains common approaches and preparation questions.

Call emergency services immediately for trouble breathing, swelling of the tongue or throat, faintness, confusion or rapidly worsening symptoms after an exposure. These signs can indicate a severe allergic reaction and need urgent treatment; wait for medical advice before arranging routine testing. A delayed rash without breathing or circulation symptoms still deserves clinical review when it keeps returning.

Ask which trigger is being investigated, whether skin or blood testing fits your history, which medicines to pause only if instructed, and how results will change your treatment plan. Ask what to do if symptoms occur before the appointment.