Specific-IgE testing (ALEX-2)
What is Specific-IgE testing (ALEX-2) for?
Specific-IgE testing can help to assess if you may be allergic to something. Various types are available: we use one called ALEX-2. The test looks for immune markers in the blood that could indicate allergies.
What does the test involve?
It is a simple blood test. The sample is sent to the laboratory and tested against a panel of possible allergens.
Is there anything I need to do before the test?
No particular preparation is needed. For children we may provide cream to help numb the skin. There is no need to stop any medication.
What are the advantages and disadvantages of this test?
The advantages are that it is a simple blood test that can be used to assess for many different allergies. The disadvantages include that it may take a few weeks for the results to be processed.
What happens after the test?
You will receive a report showing all the potential allergies your sample has been tested for and the likelihood of allergy for each one. The report needs expert interpretation so your doctor will talk you through it. Some of the potentially positive results may not always indicate true allergies and the results need to be interpreted in the context of your history - your doctor will guide you with regards to this.
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An allergy is when the body’s immune system over-reacts to something that is harmless to most people. The substance is known as an allergen.
Specific-IgE testing can help to assess if you may be allergic to something. Various types are available: we use one called ALEX-2.