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Reticulocyte Count

Reticulocytes are an immature form of red blood cells.

Normally, there are very few reticulocytes in the blood. The normal response to anemia or bleeding is increased production and release of reticulocytes, as in:

  • Iron-deficiency anemia, effectively treated with iron
  • Pernicious anemia, effectively treated with B12.
  • Several days after an acute hemorrhage
  • Hemolytic anemias

The exception to this increase is when the bone marrow is unable to increase production and release of reticulocytes, such as in:

  • Iron deficiency anemia
  • Aplastic anemia
  • Pernicious anemia
  • Bone marrow tumors
  • Radiation therapy

 

 

 

Normal Values*

Men 0.5-1.5% of RBCs
Women 0.5-2.5% of RBCs
Children 0.5-4.0% of RBCs

*These are general values taken from a variety of sources. The actual normal values may vary from lab to lab and from one type of testing protocol to another.

Source: Operational Medicine 2001,  Health Care in Military Settings, NAVMED P-5139, May 1, 2001, Bureau of Medicine and Surgery, Department of the Navy, 2300 E Street NW, Washington, D.C., 20372-5300

OB-GYN 101: Introductory Obstetrics & Gynecology
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