title: A study of plasma CEA by a direct radioimmunoassay method in 1704 cases.
abstract: The authors have used an original method of direct radioimmunoassay of plasma CEA for testing plasma of 1704 patients affetected by various neoplastic and non-neoplastic diseases. The percentage of positive results in blood from patients with adenocarcinoma of the gastroenteric tract was 66.8%. The positivity in other non-neoplastic diseases was 2.7%, except for liver cirrhosis and other chronic hepatopathies, which showed 29.6% of positive reactions. The test should be clinically useful in the differential diagnosis of gastro-enteric carcinoma.
mesh_terms: D000230:Adenocarcinoma / Q000276:immunology; D000818:Animals; D002272:Carcinoembryonic Antigen / Q000032:analysis*; D005770:Gastrointestinal Neoplasms / Q000276:immunology; D006801:Humans; D008113:Liver Neoplasms / Q000276:immunology; D008175:Lung Neoplasms / Q000276:immunology; D011817:Rabbits; D011863:Radioimmunoassay / Q000379:methods*
chemical_list: D002272:Carcinoembryonic Antigen