Total Peptic Activity of Gastric Juice. A Method of Determination.

Abstract

Inadequacies of the past methods for the detn. of pepsin in gastric juice are reviewed. The necessity for determining total pepsin on highly diluted gastric juice is discussed. A simple nephelometric method using either egg albumen or highly purified albumen substrates is described. An Evelyn photo-electric colorimeter is used as a densitometer. A method of converting the results into units which would be proportional to crystalline pepsin concn. is included.