As part of the preoperative assessment, routine laboratory workup revealed microcytic hypochromic anemia (hemoglobin: 10.7 g/dL; MCV: 71.1 fL; MCH:22; ferritin: 9 ng/mL; transferrin saturation: 3%), consistent with iron deficiency anemia (Table 1). Here, TF is linked to anemia (phenotype).