How to interpret and act on quantitative ImmunoCAP results

Having a quantitative IgE test result when investigating patients with suspected allergy opens up important new possibilities.


Knowing a patient's specific IgE antibody levels for the substances to which they are sensitive increases the possibility of ranking how the different substances affect their symptoms.

A final diagnosis should always be based on a combination of IgE test results, a physical examination and a patient’s clinical history. A general rule of thumb is that the higher the IgE antibody value, the greater the likelihood of symptoms appearing. However, a person can have a low level of IgE antibodies and still have symptoms due to exposure to the allergen in question.