We rely on our immune system to fight harmful bacteria or viruses—either on its own or with the help of antibiotics or antivirals—every day. Most of us recover quickly from infectious illnesses, and our immune system helps protect us from repeat infections in the future.
People with primary immune deficiency diseases (PIDDs), however, have defects in one or more parts of their immune system. They often cannot overcome infections, even with the aid of medicine.
Are you or your child at risk for a PIDD?
If you answered “yes” to any of these questions, you may be at risk for a PIDD. Consult with your doctor to get tested for an immune deficiency.
What to ask your doctor
To diagnose a potential immune deficiency, your doctor will need to take a blood sample and send it to a lab for an initial screening test. If that test shows that you may be at risk for a PIDD, you'll need additional testing.
What to bring to your doctor’s appointment
Last Updated December 05, 2014