EFO_0004815 (alpha macroglobulin measurement) is is a quantification of alphamacroglobulins 1 and/or 2, glycoproteins with a molecular weight of approximately 620,000 to 680,000. Precipitation by electrophoresis is in the alpha region. They include alpha 1-macroglobulins and alpha 2-macroglobulins. These proteins exhibit trypsin-, chymotrypsin-, thrombin-, and plasmin-binding activity and function as hormonal transporters. Chronic kidney disease can result in the leakage of alphamacroglobulins into the blood.