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Learn how primary immunodeficiency (PI) is diagnosed.

Getting diagnosed is the first step toward effective treatment. Explore the three main types of tests physicians use to reach a PI diagnosis.

Laboratory testing

Your medical history, symptoms, and a physical exam can help your doctor determine which set of laboratory tests to order.

Technician holds vial of blood while checking paperwork.

Immune system and genetics

Some genetic variants can lead to weaknesses or dysfunction in the immune system.


Resources just for you

PI impacts many lives. If you are living with PI, think you might have PI, are a caregiver, or healthcare professional, these resources may help.