Japanese researchers conclude that a serum ferritin level below 90 ng/mL and TSAT of 20% or higher was optimal for achieving a hemoglobin level of 10 g/dL or higher.<div><a href="http://www.renalandurologynews.com/optimal-iron-status-for-hemodialysis-patients-reported/article/674076/" target="_blank">Original link</a></div>