caused by in guideline Reticulocytosis Increased Reticulocyte Count Increased Number of Immature Red Blood Cells Increased Reticulocytes Sufficient An elevation in the number of reticulocytes (immature erythrocytes) in the peripheral blood circulation. High Reticulocyte Count HP:0001923 Increased Immature Red Blood Cells SCDO:0001272 Abnormality of Reticulocytes Splenic Sequestration Management of Sickle Cell Disease - The United Republic of Tanzania A Parental Guide to Managing Sickle Cell Disease