Results: We identified 54 patients with CIA, and IDA was found in 74% (40/54) of patients with CIA, including 4% (2/54) with absolute iron deficiency (transferrin saturation (TSAT) < 20% and ferritin < 30 ng/mL), 63% (34/54) with functional iron deficiency (TSAT < 50% and 30 ng/mL < ferritin < 500 ng/mL), and 7% (4/54) with possible functional iron deficiency (TSAT < 50% and 500 ng/mL < ferritin < 800 ng/mL). Here, TF is linked to Iron deficiency anemia.