Allergy skin prick testing seeks to detect a particular substance to which a person might be allergic, such as a species of grass pollen, cat, dog, horse hair or house dust mite. Skin prick tests can therefore be used to confirm or disprove a medical history that might suggest allergies.
A small drop of allergen solution is placed on the skin of the forearm and a small lancet is used to gently prick the skin through the drop of allergen solution. If the patient is allergic the skin develops an itchy lump like a hive comes up in the area of testing. We record the result and the size of the swelling roughly correlates with the amount of specific allergic antibody in the system.