diagnosis Stages: prelatent iron-deficiency, latent iron-deficiency iron-deficiency anemia Procedure. Ianemia 2, iron-deficiency 3. cause of iron-deficency Point I Causes and clinical findings of iron deficiency 2. Peripheral blood: microcytic hypochromic anemia 3. Bone marrow iron stain 4. Ferritin 5. Iron diagnostic therapy: Ret increasediagnosis Stages: prelatent iron-deficiency, latent iron-deficiency, iron-deficiency anemia Procedure: 1.anemia 2.iron-deficiency 3.cause of iron-deficency Point: 1.Causes and clinical findings of iron deficiency 2.Peripheral blood：microcytic hypochromic anemia 3.Bone marrow iron stain 4.Ferritin 5.Iron diagnostic therapy:Ret increase