<prompt> A 30 years old female, RBC Counts 4.5 million, MCV 55 fl, Tc 8000, no history of blood transfusion?Iron deficiencyThalassemia majorThalassemia minorMegaloblastic anemia  <response>: RBC count within normal limits 4.54.2-5.4 millions for female. Therefore rule out anemia MCV 55 microcytic 80-96 fL . Could be thalassemia minor or major Since it is a female aged 30 more probablity for thalassemia minor Ref : Robbins 9e pg 414 