Macroglobulin

A macroglobulin is a plasma globulin of high molecular weight.

Elevated levels of macroglobulins (macroglobulinemia) is seen in diseases such as Waldenström macroglobulinemia.

Other macroglobulins include alpha-2 macroglobulin, which is elevated in nephrotic syndrome, diabetes, severe burns, and other conditions, while a deficiency is associated with chronic obstructive pulmonary disease.