immune disorders
Common Variable Immunodeficiency (CVID)
Diagnosis of CVID
Blood tests Doctors suspect common variable immunodeficiency when people have typical symptoms. Blood tests are done to measure immunoglobulin levels and to determine how well the body produces immunoglobulins in response to vaccines. If common variable immunodeficiency is diagnosed, doctors do tests yearly to check for disorders that commonly develop in people with this disorder, such as autoimmune disorders, cancers, and lung disorders. Tests may include blood tests, Lung volume measurement (lung tests that measure how much air is inhaled and exhaled and how long each breath takes), and imaging (such as computed tomography). 