Most of our proteins are glycosylated, with their glycan parts often playing an essential functional role. Glycans are crucial for the functioning of our immune system. Glycans attached to the antibodies modulate their activity and determine if they will have a pro-inflammatory or anti-inflammatory function. Thus, it is not surprising that glycan profiles can serve as a measure of an individual’s health. The GlycanAge test looks at the glycosylation pattern of the immunoglobulin G (IgG) molecule. IgG is the most prevalent antibody type in our blood and especially important in controlling inflammation and pathogens.