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, 01:21, 11 October 2022
=Workup=
* RDW elevated? Thalassemia.
* RDW normal? Calculate the Mentzer index (MCV/RBC). If < 13, consistent with iron deficiency anemia. Order ferritin to confirm.
* Iron studies normal or Metnzer index > 13? Order lead level or Hb electrophoresis.