Fig. 1.
Pictogram depicting traditional screening versus using the preprocedure anemia evaluation for iron-deficiency anemia. *Anemia defined as hemoglobin less than or equal to 12g/dL. †Reticulocyte count processed from original lavender top tube. CBC, complete blood count; eGFR, estimated glomerular filtration rate; IDA, iron-deficiency anemia; NMPC, Northwestern Memorial Hospital Preoperative Clinic; TIBC, total iron-binding capacity; TSAT, transferrin saturation; TSH, thyroid-stimulating hormone.