What happens after allergy testing?

A positive skin or blood test shows sensitisation to a substance, but it does not by itself prove that every exposure causes symptoms. The clinician considers timing, symptom pattern, examination findings and the amount or route of exposure. A negative result may make a particular allergy less likely, while some symptoms may still have another explanation. You should receive an explanation of which triggers appear relevant, which findings are uncertain and whether further assessment is needed.

Write down the triggers discussed and check labels or environments where they may occur. Follow the agreed plan for reducing exposure, and use prescribed treatment exactly as directed. Allergy medication may be suggested for symptoms such as sneezing, itching or hives. Do not remove foods from your diet or stop medicines without a clear plan, especially when testing was done for a suspected food or drug reaction. Keep a record of symptoms if the pattern remains unclear.

Call emergency services for sudden breathing difficulty, throat or tongue swelling, faintness, confusion or symptoms affecting several body systems after an exposure. A rapidly spreading reaction, repeated vomiting or severe wheezing also needs urgent assessment. Mild local itch or redness after skin testing often settles, but contact the testing service if the reaction is extensive, painful or continues to worsen.

Ask what the result means in your case, which exposures to avoid, whether you need an emergency action plan, how to use recommended medicines and whether any follow-up testing is appropriate.