This test checks the amount of certain antibodies called immunoglobulins in your body. Antibodies are proteins that your immune cells make to fight off bacteria, viruses, and other harmful invaders.

Immunoglobulins, or antibodies, are produced by white blood cells. They help your body defend against infections and conditions like cancer. Tests measure them and help diagnose these medical ...

Primary immunodeficiency (PID) diseases occur in about 1 in every 1200 individuals and are associated with recurrent infections and several comorbidities that contribute to its substantial morbidity ...