Isoamylasein Serum Compared in PancreaticDiseases

We meastfed the concentration of immunoreactive trypsin and the enzymic activIty of pancreatic isoamylase in sera from 103 patIents with pancreatic diseases and 29 other subjects serving as a reference group. Almost all patients with pancreatic diseases had abnormal values for both enzymes. A strong positive correlation between these two variables over a 1000-fold range was observed. Addftlonal Keyphrases: confirming diagnosis enzyme activity The clinical diagnosis of pancreatic diseases is difficult, in part because of the lack of specificity of the commonly used laboratory tests. An increase in serum and (or) urinary a-amylase (EC 3.2.1.1) concentration (or activity) is used to support a diagnosis of acute pancreatitis and acute relapsing panceatitis, although above-normal aniylase values are foun