Carcinoembryonoic Antogen Carcinoembryonoic Antogen CEA (Carcinoembryonic Antigen) test. CEA CEA – WebMD carcinoembryonic antigen http://www.webmd.com/cancer/carcinoembryonic-antigen-cea#1 Carcinoembryonoic Antogen Tumor Marker CEA Tumor Marker CEA