Use App for best experience!
Available for Android & iOS
IgG4 is a subclass of IgG, which is the most common form of immunoglobulin. IgG accounts for 75% of antibodies circulating in the blood, which are an essential part of the secondary immune response to infection and toxins. IgG is made by plasma cells, a specific type of B lymphocyte.
Overnight fasting is preferred.