anemia ↓ in RBC mass: Hct <41% or Hb <13.5 g/dL (men); Hct <36% or Hb <12 g/dL (women) 男生小於 13 女生小 12 製造不足:接著看 MVC、RI 上升:破壞太多、流失過多 clinical manifestations-anemia Diagnostic evaluation-anemia Approach to anemia and common causes 製造不足系列: microcytic anemias normocytic anemias macrocytic anemias pancytopenia 破壞太多系列: hemolytic anemias