Macroamylasemia does not cause symptoms.
A blood test will show high levels of amylase. However, macroamylasemia can be confused with acute pancreatitis, which also causes high levels of amylase in the blood.
Macroamylasemia can be diagnosed by measuring amylase levels in the urine. Urine levels of amylase are low. (Urine amylase levels are high in patients with acute pancreatitis.)
Owyang C. Pancreatitis. In: Goldman L, Ausiello D, eds. Cecil Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007:chap 147.
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