Fecal occult blood testing.
D001466:Barium Sulfate / Q000494:pharmacology; D002400:Cathartics / Q000494:pharmacology; D004032:Diet; D005188:False Negative Reactions; D005189:False Positive Reactions; D005243:Feces / Q000032:analysis*; D005767:Gastrointestinal Diseases / Q000175:diagnosis; D006138:Guaiac / Q000097:blood; D006454:Hemoglobins / Q000032:analysis; D006801:Humans; D007501:Iron / Q000494:pharmacology; D008460:Meat; D009780:Occult Blood
D002400:Cathartics; D006454:Hemoglobins; D001466:Barium Sulfate; D006138:Guaiac; D007501:Iron