Radioselenium in Duodenal Aspirate as an Assessment of Pancreatic Exocrine Function

Abstract
A new test of pancreatic exocrine function is described in which radioselenium is measured in duodenal aspirate after an intravenous injection of 75Se-selenomethionine and administration of a Lundh test meal. Duodenal 75Se activity gave good separation between normals and subjects with disease of the exocrine pancreas and correlated well with trypsin levels in the aspirate.