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Polychromatophilia

Polychromasia

Polychromatophilia refers to how blood cells look under a microscope when the cells are stained with special dyes. It means there is more staining than normal with certain dyes. The extra staining is due to an increased number of immature red blood cells (RBCs) called reticulocytes. These cells have a blue-colored center.

Increased reticulocytes are the result of the bone marrow making more red blood cells than normal. This can be caused by certain conditions that require increased production of red blood cells, such as hemolytic anemia.

References

Neerja V, Graham SS, Bem S. Basic examination of blood and bone marrow. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 24th ed. Philadelphia, PA: Elsevier; 2022:chap 31.


         

        Review Date: 3/15/2021

        Reviewed By: Jatin M. Vyas, MD, PhD, Associate Professor in Medicine, Harvard Medical School; Associate in Medicine, Division of Infectious Disease, Department of Medicine, Massachusetts General Hospital, Boston, MA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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