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 ?
To clarify the differential diagnoses, additional studies could have been evaluated at this point: a C-reactive prorein to define the presence of an inflammatory process; an intact parathyroid hormone (PTH) level to rule out secondary hyperparathyroidism; and serum lactate dehydrogenase (LDH), absolute reticulocyte count, reticulocyte index, and reticulocyte production index as markers of erythropoieric activity.
2007) found that the reticulocyte index helps to make the distinction between an underlying maturation, hemolytic, or hemorrhagic disorder.
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.