title: Comparative studies on the "in vivo"-sensitivity of four commercial pseudoperoxidase-based faecal occult blood tests in relation to actual blood losses as calculated from measured whole body-59Fe-elimination rates.
mesh_terms: D005069:Evaluation Studies as Topic; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D006801:Humans; D007504:Iron Radioisotopes; D009780:Occult Blood; D010544:Peroxidases
chemical_list: D007504:Iron Radioisotopes; D010544:Peroxidases