title: Radionuclide determination of gastrointestinal blood loss.
mesh_terms: D000005:Abdomen; D002840:Chromates; D002859:Chromium Isotopes; D002951:Citrates; D004912:Erythrocytes; D005243:Feces / Q000032:analysis; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis*; D006801:Humans; D007441:Intubation, Gastrointestinal; D007503:Iron Isotopes; D008467:Meckel Diverticulum; D008722:Methods; D009780:Occult Blood; D011868:Radioisotopes; D011877:Radionuclide Imaging; D012975:Sodium Isotopes; D013667:Technetium; D014915:Whole-Body Counting
chemical_list: D002840:Chromates; D002859:Chromium Isotopes; D002951:Citrates; D007503:Iron Isotopes; D011868:Radioisotopes; D012975:Sodium Isotopes; D013667:Technetium