reticulocyte production index
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re·ti·cu·lo·cyte pro·duc·tion in·dex
(RPI) (rĕ-tik'yū-lō-sīt prŏ-dŭk'shŭn in'deks)A calculated value that serves as an indicator of the bone marrow response in anemia. It is calculated as patient's hematocrit ÷ 0.45 L/L × reticulocyte count (%) × 1 ÷ maturation time of shift reticulocytes.
re·ti·cu·lo·cyte pro·duc·tion in·dex
(rĕ-tik'yū-lō-sīt prŏ-dŭk'shŭn in'deks)A calculated value that indicates bone marrow response in anemia.