What does a high IgG result mean?

A high IgG result is a non-specific laboratory finding. IgG antibodies are the most abundant antibody class in blood and typically rise during chronic infections, autoimmune diseases, or inflammation. However, the provided context contains no information about IgG or specific conditions associated with elevated IgG. Without clinical context (e.g., IgG subclasses, symptoms, trend), no reliable interpretation is possible. Direct-to-consumer lab tests that report a single IgG value are often misleading, as they present total IgG without reference ranges or differential diagnostics. The evidence for interpreting an isolated high IgG is weak when no additional data are available. Important: An elevated IgG alone is not a diagnosis. If abnormal, a physician should evaluate the result in clinical context. Safety note: Do not make independent treatment decisions based on a single lab value.