You would order Food Sensitivity C3d and IgG4 and Food Sensitivity IgA and IgG when you need deeper immune response insight. Antibodies are a part of the adaptive immune system, and C3d is a part of the innate immune system. Measuring both immune system responses captures the most comprehensive picture of immune reactivity.
When would you order both Food Sensitivity C3d and IgG4 and Food Sensitivity IgA and IgG?
Adair
