Hematology and Oncology Book

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Microcytic Anemia

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  1. See Also
    1. Anemia
    2. Anemia Clinical Clues
    3. Anemia Evaluation
  2. Causes
    1. Iron Deficiency Anemia
    2. Thalassemia
    3. Lead Poisoning
    4. Sideroblastic Anemia
    5. Anemia of Chronic Disease
  3. Labs
    1. Complete Blood Count
      1. See Hemoglobin Cutoffs for Anemia
      2. See Hematocrit Cutoffs for Anemia
      3. Mean Corpuscular Volume (MCV) <80
        1. See MCV Cutoffs for Microcytic Anemia
        2. MCV cutoff varies by age and per reference
    2. Reticulocyte Index <1% (Reticulocytopenia)
      1. See Anemia for causes of Reticulocytosis
    3. Mean Corpuscular Volume to Red Blood Cell Count ratio
      1. See Mentzer Index
      2. Ratio <13: Thalassemia
      3. Ratio >13: Iron Deficiency Anemia, Hemoglobinopathy
    4. Transferrin Saturation
      1. Near complete saturation in Sideroblastic Anemia
      2. Less than 5% saturated in Iron Deficiency Anemia
  4. References
    1. Shine (1997) Am Fam Physician 55(7):2455

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