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.
References in periodicals archive ?
In conclusion, the reticulocyte channel of the Sysmex XE-2100 series offers a new reticulocyte index, the Ret-Y, which shows good correlation with the CHr.
Laboratory data showed normocytic anemia with a reticulocyte index of 0.
45 but the polychromasia is moderate or marked, should a reticulocyte index still be performed?
9]/l (normal-sized platelets in peripheral blood smear); corrected reticulocyte index 0.
A less invasive standard for iron deficiency is based on the hematologic response to iron replacement therapy: an increase of the reticulocyte count or reticulocyte index after oral or intravenous iron replacement therapy reveals the presence of iron deficiency.
The criteria used were Hb [greater than or equal to]140 g/L for men and [greater than or equal to]123 g/L for women (22); normocytic, normochromic red cells; a red cell distribution width (RDW) [less than or equal to]15%; a corrected reticulocyte index (CRI) [less than or equal to]2.