Testing for pollen allergy: when to do it and which tests to have
Testing is useful because it turns "I'm probably allergic to something" into clues you can act on. But the timing has to be right.
When is a good time to test
Testing is usually suggested when your symptoms follow a clear pattern and the allergen needs to be identified. For example, symptoms that come back at the same time each year, when allergen immunotherapy is being considered, or when allergy and infection need to be told apart. During a period when acute symptoms are very obvious, some tests may be affected. Your doctor will decide how to arrange them.
Common tests
- Skin prick test: quick and direct. You need to stop certain medicines that could affect the result, as instructed.
- Specific IgE: a blood test. It does not depend on the condition of your skin.
- If needed, a specialist will assess whether other tests are required.
Pollen often causes sensitisation as a "group". For example, you may test positive to several tree or weed pollens at the same time. Your doctor will judge which results actually matter, based on what is common in your area and when your symptoms appear.
Understanding the results correctly
A positive test means sensitisation is present. It does not mean you will definitely have obvious symptoms. A negative test cannot completely rule out a clinical allergy either. What really matters is whether your symptoms match your exposure. After you get the report, a doctor should explain it and use it to discuss environmental control, medicines, and whether allergen immunotherapy is needed. Do not decide on long-term avoidance or medicines on your own based only on the numbers.
This article is public education only and is for general information only. It is not medical advice. Please follow your doctor's instructions.
This article is for general information only and is not medical advice. If your symptoms affect daily life, please see a doctor.