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Clinical Chemistry 36: 682-684, 1990;
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Clinical Chemistry, Vol 36, 682-684, Copyright © 1990 by American Association for Clinical Chemistry

Measurement of pepsinogen group I in endoscopic gastroduodenal biopsies

M Plebani, F Di Mario, PL Dal Santo, D Faggian, B Germana, F Vianello, R Naccarato and A Burlina
Department of Clinical Biochemistry, University of Padua, Italy.

A technique for determining pepsinogen group I (PGI) concentrations in endoscopic gastroduodenal biopsies is described and validated. This method has a good precision (intra-assay CVs 4.1% to 8.4%; between- assay CVs 4.6% to 9.3%), and analytical recovery is satisfactory (94% to 102%). Results were uninfluenced by the storage interval of the samples. At PGI-producing sites (i.e., fundus, corpus) peptic activity was greater than in the antrum and duodenum. PGI concentrations in serum and in gastroduodenal biopsies were not correlated. This simple, reliable method can quantify better than other assays peptic activity in humans, without being influenced by gastric secretory volumes. It will also facilitate prospective studies on the effect of various secretagogues in vivo and evaluations of the influence of anti-ulcer drugs on peptic secretion.




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