What Is Macrolipasemia?
Macrolipasemia is a rare enzyme disorder characterized by altered molecules of lipase, a pancreatic enzyme needed to digest fats, that are abnormally bound with serum antibody proteins. These antibodies are commonly immunoglobulin G (IgG) and/or less likely immunoglobulin A (IgA).
Q: What happens when lipase is bound to immunoglobulins (IgA and/or IgG)?
A: The resulting molecule is too large to be filtered by the kidneys and excreted in the urine, consequently these abnormal molecules build up in the plasma causing sustained elevation of lipase levels called macrolipasemia.
Macrolipasemia occurs with or without macroamylasemia, which is the binding of immunoglobulin A and/or G to amylase, a pancreatic enzyme needed to digest starches.1 
What Is Macrolipasemia In Celiac Disease and/or Gluten Sensitivity?
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La Villa G, Pantaleo P, Tarquini R, Cirami L, Perfetto F, Mancuso F, Laffi G. Multiple immune disorders in unrecognized celiac disease: a case report. World J Gastroenterol. 2003;9(6):1377-1380, Available at: http://www.wjgnet.com/1007-9327/9/1377.asp. Accessed Jan 3, 2005. ↩