Skin Prick Test

1. Lower left arm (vice versa for left-handers) is swabbed with alcohol solution to clean the surface.


2. Six small dots are marked on arm using a pen.


3. 4 types of common allergens, 1 positive (histamine) control and 1 negative (saline) control are dripped near the dots.


4. Sterile lancets are used to make extremely small, light scratches on the skin where the 6 drops are.



5. You will have to wait for 15 min (during which you can complete the questionnaire). Please do not flex or move your arm excessively.




6. After 15 min, the length of each weal (bump) and flare is measured and recorded. From this, we can tell which allergens you are sensitive to.

For more info on the Skin Prick Test, click.