Haematology · Internal Medicine
Reticulocyte Production Index calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
%
Allowed range: 0–50 %
Quick picks
%
Allowed range: 5–60 %
Quick picks
Result
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Clinical inputs
- Reticulocyte percentage (%)Accepted range: 0 to 50
- Hematocrit (%)Accepted range: 5 to 60
Primary source
Pettit CL, Liebman HA. Laboratory evaluation of anemia. In: Hoffman R et al., Hematology. Primary maturation table in Brugnara C, Moran J. Hematology. DOI: 10.1016/B978-1-4377-2928-3.00035-6. PMID: 21422432. Scope: reticulocyte production index = [(reticulocyte % × patient hematocrit / 45)] divided by a maturation factor based on hematocrit (1.0 at ≥40%, up to 3.0 at <25%). (2013)
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