Abstract
Development of solid phase coated tube immunoradiometric assay for estimation of carcinoembryonic antigen (CEA) was the aim of the present study. Labeling of CEA was carried out using Ch-T and iodogen as oxidizing agents and 125I. The tracers were used to test the presence of antibodies produced by immunization. Production of polyclonal antibody was carried out through immunization of four mice. After purification step, the tubes were coated by purified polyclonal antibodies. Immunoradiometric that system was performed using the commercial IZOTOP 125I-anti hCEA tracer then the validity studies were carried out. The results show that the local coated tubes made the assay is more than sufficient to fulfill the clinical requirement of CEA as a tumor marker.
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