At a Glance
Why Get Tested?
When to Get Tested?
When you have recurrent infections and/or chronic diarrhea; when your health practitioner suspects an immunoglobulin deficiency; periodically to monitor a condition that affects immunoglobulin levels that may be genetic or acquired (HIV/AIDS, multiple myeloma)
A blood sample drawn from a vein in your arm; sometimes a cerebrospinal fluid (CSF) or saliva sample
Test Preparation Needed?