Which of the following statements regarding the schilling test for vitamin B|2 malabsorption is most accurate?
The schilling test results are abnormal in patients with dietary vitamin B,,deficiency In patients with pernicious anemia, the results of the schilling test normalize after oral administration of intrinsic factor In patients with ileal disease, the results of the schilling test normalize after oral administration of intrinsic factor Pancreatic exocrine insufficiency does not cause schilling test results to be abnormal