Total IgG levels were determined in serum samples pretreatment and again 2 weeks after treatment. Some patients also had IgG levels measured at 4 weeks (91 patients), 3 months (86 patients), and 6 ...

Medically reviewed by Laura Young, MD The herpes IgG test is a blood test used to diagnose herpes simplex virus (HSV). This ...

This is where the IgG food sensitivity test can help. It checks how your immune system reacts to different foods by looking for a specific antibody called Immunoglobulin G (IgG) in your blood.