Laboratory indicators of iron deficiency anemia include the following: hemoglobin (Hb) concentration < 11 g/dL, serum ferritin < 30 ng/mL, decreased serum iron, increased transferrin concentration and total iron-binding capacity (TIBC), as well as decreased transferrin saturation (TSAT) and mean corpuscular volume (MCV) below 80 fL. Here, TF is linked to anemia.