[Biochemical test for the presence of pepsinogen-pepsin for the diagnosis of stomach cancer metastases].

In metastases and malignant tumors arising from gastric mucous membrane irrespective of their localization the method of electrophoresis and enzyme-electroporesis in agar gel demonstrates the presence of rapidly moving anode fractions I, II, and III corresponding to pepsinogen-pepsin isoforms of normal gastric mucosa but lacking proteolytic activity.