Reticulocyte count

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Reticulocytes

The normal range is 0.5-2%.

The normal range is higher if there has been any blood loss or red blood cell destruction.

A higher-than-normal percentage of reticulocytes may indicate:

• erythroblastosis fetalis
• hemolytic anemia
• post-hemorrhage (bleeding)
• kidney disease with increased erythropoietin production

• bone marrow failure (for example, from toxicity, tumor, fibrosis, infection)
• cirrhosis of the liver
• folate deficiency
• iron deficiency
• radiation therapy
• vitamin B-12 deficiency
• kidney disease with decreased erythropoietin production

• anemia of chronic disease
• congenital spherocytic anemia
• hemolytic anemia due to G6PD deficiency
• idiopathic aplastic anemia
• idiopathic autoimmune hemolytic anemia
• immune hemolytic anemia
• pernicious anemia
• secondary aplastic anemia
• drug-induced immune hemolytic anemia

Review Date: 02/01/2005
Reviewed By: Rita Nanda, M.D., Department of Hematology/Oncology, University of Chicago Medical Center, Chicago, IL. Review provided by VeriMed Healthcare Network.