A 3 Step Process


Diagnosing allergy starts with a physical examination and an allergy-focused patient history.

Asthma review template Rhinitis-focused history template
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Food Allergy-focused history template Eczema-focused history template
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2. Confirm

A suspected allergy can be confirmed with the addition of a specific IgE blood test

Why use specific IgE testing?

  • Specific IgE is a quantitative blood test and has an excellent clinical performance*
  • Can be used in any patient, irrespective of medication or condition, without risk of adverse reaction (anaphylaxis)
  • Does not require specialised equipment, training or facilities


How to order a test

  • If you have a clinical suspicion of allergic involvement, specific IgE testing can be requested via your local pathology ordering system
  • The test is already available - it may be listed as specific IgE, RAST, SpIgE, sIgE or ImmunoCAP
  • You may need to specify the allergen/s you require for the test and provide a brief patient history
  • A 1 ml sample of whole blood allows you to test for up to 10 different allergens


Which allergens?1-5 

Food allergy


What do my results mean? 


Management plans

Allergy Action PlanDownload

Anaphylaxis Action PlanDownload

Anaphylaxis Plan for ChildrenDownload

Exposure reduction advice

Aero AdviceDownload

Cow's MilkDownload





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  1. NHS Food; www.nhs.uk/conditions/food-allergy/pages/causes.aspx; last accessed June 2016.
  2. NHS Asthma; www.nhs.uk/conditions/anaphylaxis/pages/causes.aspx; last accessed June 2016.
  3. NHS Rhinitis; www.nhs.uk/conditions/rhinitis---allergic/pages/causes.aspx; last accessed June 2016.
  4. NHS Eczema; www.nhs.uk/conditions/eczema-(atopic)/pages/causes.aspx; last accessed June 2016.
  5. NHS Anaphylaxis; www.nhs.uk/conditions/anaphylaxis/pages/causes.aspx; last accessed June 2016.
  6. Söderströn L, et al. Allergy 2003;58:921-928.
  7. Sampson HA, et al. J Allergy Clin Immunol 2001;107:891-896.
  8. National Institute for Health and Clinical Excellence. Food allergy in children and young people (CG116). 2011. London: National Institute for Health and Clinical Excellence.

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