Clinical Laboratory Hematology 3rd Edition by Shirlyn McKenzie, Lynne Williams

Exercise 42

A 28-year-old female from Laos who had a hemoglobin of 11.2 g/dL was diagnosed with iron-deficiency anemia. She was given iron supplements. Her reticulocyte count increased from 4% to 5% after 6 days of treatment. Six months later, she returned for a follow-up CBC. Her hemoglobin was 11.5 g/dL, and the red cells were microcytic (75 fL), normochromic. What reflex test should be done? (Objective 8)
A) hemoglobin electrophoresis
B) serum iron
C) bone marrow
D) serum ferritin