a damaging immune response by the body to a substance, especially a particular food, pollen, fur, or dust, to which it has become hypersensitive.

synonyms: hypersensitivity, sensitivity, susceptibility; allergic reaction

“she developed an allergy to feathers”

The worldwide frequency of allergies has increased significantly over the past decades. The term allergy is used for type I hypersensitivity reactions (immediate type reactions), whose symptoms generally occur within 30-60 minutes after contact with the allergen.

The most frequent symptoms are:

  • hay fever (rhinitis)
  • conjunctivitis
  • hives (urticaria)
  • allergic asthma and as the most dangerous manifestation anaphylaxis (the anaphylactic shock).

The allergens causing type I hypersensitivity reactions are mostly proteins derived from the natural environment e.g. plant pollen, animal hair, food, mites and insect venoms.

A characteristic of type I allergies is the involvement of allergen specific immunoglobulins (antibodies) of class E (sIgE). Hence, the detection of sIgE is an important tool of modern allergy diagnostics.

ALFA (Allergy Lateral Flow Assay) is a rapid test for the qualitative determination of allergen specific Immunoglobulin E (sIgE).

Please click on the links below for more information:

ALFA Allergy Rapid Test Brochure

ALFA Allergens List