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Retic count.

Common Use:
To assess reticulocyte count in relation to bone marrow activity toward diagnosing anemias such as pernicious iron deficiency, and hemolytic; to monitor response of therapeutic interventions.

Whole blood collected in a lavender-top (EDTA) tube.

Normal Findings:
(Method: Automated analyzer or microscopic examination of specially stained peripheral blood smear)

AgeReticulocyte Count %
Adult–older adult0.5%–1.5%
Reticulocyte Count (Absolute Number)
Birth–older adult0.02–0.10 (106 cells/microL)
Immature Reticulocyte Fraction %
Newborn–older adult2.5%–17%
Reticulocyte Hemoglobin
Birth22–32 pg/cell
Newborn–18 yr23–34 pg/cell
Adult–older adult30–35 pg/cell

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