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Reticulocyte Count
About this test
A reticulocyte count is a blood test that
measures how fast
red blood cells called
reticulocytes 
are made by the bone marrow and released
into the blood. Reticulocytes are in the blood for about 2 days before
developing into mature red blood cells. Normally, about 1% to 2% of the red
blood cells in the blood are reticulocytes.
The reticulocyte count rises when there is a lot of blood loss or in certain diseases in which red blood cells are destroyed prematurely, such as hemolytic anemia. Also, being at high altitudes may cause reticulocyte counts to rise, to help you adjust to the lower oxygen levels at high altitudes.
| By: | Healthwise Staff | Last Revised: July 29, 2010 |
| Medical Review: | E. Gregory Thompson, MD - Internal Medicine Joseph O'Donnell, MD - Hematology, Oncology | |
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. How this information was developed to help you make better health decisions.
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