What might the hematologic findings indicate and what should be done to further evaluate them?
WBC = normal with a normal differential and platelet count Hct = 29%; MCV = normal, MCHC = slightly decreased; RDW = markedly increased; reticulocyte count < 2% Smear with mixed microcytic/hypochromic and macrocytic/normochromic red blood cells; WBC and platelets appear normal PT/PTT, liver function tests, electrolytes, and amylase normal Upper endoscopy with 2 cm. duodenal ulcer with evidence of recent but no acute hemorrhage ADDITIONAL LABORATORY RESULTS: Serum iron, total iron binding capacity, saturation, and ferritin all reduced Bone marrow biopsy with megaloblastic changes and low iron stores Serum folate and red blood cell folate low; B12 normal
What might the hematologic findings indicate and what should be done to further evaluate them?