Normal Values:

The normal range depends on the level of hemoglobin, and the range is higher if there is low hemoglobin due to bleeding or red cell destruction.

What abnormal results mean:

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

• Bleeding
• Erythroblastosis fetalis
• Hemolytic anemia
• Kidney disease with increased erythropoietin production

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

• Bone marrow failure (for example, from drug toxicity, tumor, or infection)
• Cirrhosis of the liver
• Folate deficiency
• Iron deficiency
• Kidney disease with decreased erythropoietin production
• Radiation therapy
• Vitamin B-12 deficiency

Additional conditions under which the test may be performed:

• Anemia of chronic disease
• Congenital spherocytic anemia
• Drug-induced immune hemolytic anemia
• Hemolytic anemia due to G6PD deficiency
• Idiopathic aplastic anemia
• Idiopathic autoimmune hemolytic anemia
• Immune hemolytic anemia
• Pernicious anemia
• Secondary aplastic anemia