Skin prick tests yield rapid results and are reliable, easy to perform and cost effective.
Skin prick tests are done in children suspected of having sensitisation to allergens. These allergens could be aero-allergens (found in the air), or food allergens. The common aero-allergens are house dust mite, cockroach, cat saliva, dog epithelium, grass, trees and moulds. Common food allergens include cow’s milk, peanuts, eggs and fish. Children should not be on antihistamines and corticosteroids for at least 1 week before testing. A positive skin test is a wheal 3mm greater than the positive control.