What is IgG?
The immunoglobulin G test is a clinical assay to determine the levels of Immunoglobulin G in the blood to diagnose the exact cause of immune deficiency.
Why is IgG done?
Immunoglobulin G is tested when symptoms of deficiency of immune system appear, especially in children. These include greater susceptibility to simple diseases like common cold, greater susceptibility to infections, weakened wound healing, etc.