Skin Prick Testing (SPT)
Skin Prick Testing (SPT) is a commonly used allergy test that helps identify specific substances that may trigger allergic reactions. It can be useful in evaluating symptoms such as sneezing, nasal congestion, itching, runny nose and other allergy-related complaints. The test is performed under appropriate clinical guidance based on the patient's symptoms and medical history.
When SPT May Be Recommended
Skin prick testing may be considered when symptoms suggest sensitivity to specific allergens and identifying the possible trigger can help with further management.
- Recurrent sneezing, nasal itching or runny nose
- Persistent nasal congestion or allergy-related symptoms
- Symptoms that occur after exposure to suspected allergens
- Recurrent or seasonal allergy symptoms requiring evaluation
What Skin Prick Testing Involves
During the test, small amounts of selected allergen extracts are applied to the skin and the area is gently pricked. The skin is then observed for a local reaction. The allergens tested are selected according to the patient's symptoms, history and suspected exposures.
- Selection of relevant allergens based on clinical history
- Application of small amounts of allergen extracts to the skin
- Careful observation for local skin reactions
- Interpretation of results along with symptoms and medical history
Understanding the Results
SPT results are interpreted together with the patient's symptoms and clinical history. A positive test indicates sensitisation to a particular allergen but does not always mean that it is the direct cause of every symptom. The findings can help guide allergen avoidance and an individualized allergy management plan.
