Rarely, allergy skin tests can produce a severe, immediate allergic reaction, so it's important to have skin tests performed at an office where appropriate emergency equipment and medications are available.

How do you test for allergy severity?

Skin Prick Test (SPT)

In some cases, skin tests can be the most accurate and least expensive way to confirm allergens. For prick/scratch testing, the doctor or nurse places a small drop of the possible allergen on the skin. They will then lightly prick or scratch your skin with a needle through the drop.

How severe is a Class 3 allergy?

Class 3: High level of allergy (3.5 KUA/L – 17.4 KUA/L) indicative of high level sensitization.