IgG (Immunoglobulin G)

Immunoglobulin G (IgG) is the most common type of antibody found in your blood and tissues, playing a key role in your immune system. It helps identify and neutralize bacteria, viruses, and toxins, providing long-term immunity after infections or vaccinations. IgG antibodies recognize specific invaders, mark them for destruction, and can cross the placenta to protect newborns. They are essential for immune defense, maintaining health by preventing or controlling infections. Elevated or decreased IgG levels can indicate certain health conditions, guiding doctors in diagnosis and treatment.