Gastrointestinal Evaluation of Iron Deficiency Anemia In patients with anemia, diagnose iron deficiency if: • Ferritin < 45 • Additional laboratory tests may be needed in patients with underlying inflammation or chronic kidney tests Test for celiac disease with serology first Small bowel biopsy only if serology is positive Bidirectional endoscopy: • Recommended in men and postmenopausal women • Suggested in premenopausal women Non-invasive testing for H pylori Do not perform routine gastric biopsies Capsule endoscopy only if: • Negative bidirectional endoscopy • Insufficient response to iron supplementation • Patient population where identification of small bowel pathology will change medical management #Iron #Deficiency #Anemia #Gastrointestinal #Evaluation #workup #diagnosis #gastroenterology
