Immunglobulin G

Immunoglobulin G (IgG) is the most abundant type of antibody found in the circulation, playing a crucial role in the body's immune response by identifying and neutralizing pathogens such as bacteria and viruses. IgG is produced by plasma cells and is involved in the secondary immune response, providing long-term protection. Clinically, IgG levels are significant in diagnosing and monitoring various conditions, including autoimmune disorders, infections, and immunodeficiencies. Elevated IgG levels can indicate chronic infections, autoimmune diseases, or liver disease, while low levels may suggest immunodeficiency or protein-losing conditions. In the context of athletic performance and biohacking, IgG's role in immune function is critical, as maintaining optimal immune health is essential for recovery and performance. IgG glycosylation patterns have been studied in relation to aging, with certain glycan profiles associated with inflammaging, a chronic low-grade inflammation linked to aging. Researchers have found that IgG levels can be influenced by various factors, including infections, autoimmune activity, and genetic predispositions. Testing for IgG does not typically require fasting, but levels can be affected by acute infections or recent vaccinations, which should be considered when interpreting results.