Version 2.80

Term Description

The reticulocyte production index also called the corrected reticulocyte "count" (it is really a percentage, adjust the observed count for the degree of anemia based on the hematocrit using the formula
Recticulocyte index= Reticuloctye% *( Hct(observed)/45) where 45 is taken to be the "standard" hematocrit

Reticulocyte production index= Reticulocyte index X correction factor"

where correction factor is applied as follows
HCT Correction factor
36-45 1.0
26-35 1.5
16-25 2.0
< 15 2.5

The Reticulocyte production index (RPI, also called a corrected reticulocyte count) is a calculated value used in the diagnosis of anemia. This calculation is necessary because the raw reticulocyte count is misleading in anemic patients. The problem arises because the reticulocyte count is not really a count but rather a percentage: it reports the number of reticulocytes as a percentage of the number of red blood cells. In anemia, the patient's red blood cells are depleted, creating an erroneously elevated reticulocyte count.
Source: Wikipedia

Part Descriptions

LP16487-8   Reticulocytes
Reticulocytes are immature red blood cells (RBC), comprising about 1% of the red cells in the human body. They develop and mature in the bone marrow and then circulate for about a day in the blood before developing into mature RBC. Like mature RBC, reticulocytes do not have a nucleus. They are called reticulocytes because of a reticular (mesh-like) network of ribosomal RNA that is visible under a microscope. Reticulocytes appear slightly bluer than other RBC when stained with Romanowsky stain. Reticulocytes are also slightly larger and thus can be identified as a high mean corpuscular volume during a full blood count done by machine. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia , Reticulocytes (Wikipedia)

LP16487-8   Reticulocytes
In humans, reticulocytes are erythroid cells that have just undergone extrusion of their nucleus. They still contain some organelles that gradually decrease in number as the cells mature. Ribosomes are last to disappear. Certain staining techniques cause components of the ribosomes to precipitate into characteristic "reticulum" (not the same as the endoplasmic retuculum), hence the name reticulocytes. Source: National Library of Medicine, MeSH 2006

Fully-Specified Name

Component
Reticulocytes/Erythrocytes^^hematocrit adjusted
Property
NFr
Time
Pt
System
Bld
Scale
Qn
Method

Additional Names

Long Common Name
Reticulocyte production index
Short Name
Reticulocyte production index
Display Name
Reticulocytes/Erythrocytes hematocrit adjusted (Bld)
Consumer Name Alpha Get Info
Reticulocytes/Erythrocytes Hematocrit Adjusted, Blood

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 2.07
Last Updated
Version 2.79 (NAM)
Change Reason
Release 2.79: COMPONENT: Triggered by Coll w SCT: This is a specific fraction case where the denominator is percentage or /100. Because the logic is that the percentage piece is captured by Property: NFr (Numeric Fraction), and by Unit: %, therefore, it is redundant to include "100" in the component; Previous Releases: The system of RBC had been an oversight. Reticulocytes are red blood cells, but the system of interest is blood
Order vs. Observation
Observation
Common Test Rank Get Info
1470

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: RPI
de-DE German (Germany) Retikulozyten/Erythrozyten^^Hämatokrit angepasst:Anzahl pro Fraktion:Zeitpunkt:Blut:Quantitativ:
es-AR Spanish (Argentina) reticulocitos/100 eritrocitos^^hematócrito ajustado:fracción de un número:punto en el tiempo:eritrocitos:cuantitativo:
es-ES Spanish (Spain) Reticulocitos/100 eritrocitos^^hematocrito ajustado:Fracción numérica:Punto temporal:Sangre:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Reticulocitos / 100 eritrocitos^^ hematocrito ajustado:Fracción numérica:Punto temporal:Sangre:Cuantitativo:
fr-CA French (Canada) Réticulocytes/Érythrocytes^^ajusté pour l'hématocrite:Fraction numérique:Temps ponctuel:Sang:Quantitatif:
fr-FR French (France) Réticulocytes/100 érythrocytes hématocrite ajusté(e):Fraction de nombres:Ponctuel:Sang:Numérique:
it-IT Italian (Italy) Reticolociti/Eritrociti^^ematocrito regolato:NFr:Pt:Sangue:Qn:
Synonyms: Ematologia (coagulazione) conta differenziale Frazione numerica Punto nel tempo (episodio) Sangue
ko-KR Korean (Korea, Republic Of) 그물적혈구/100 적혈구^^표준 적혈구용적률:숫자분획:검사시점:적혈구:정량:
nl-NL Dutch (Netherlands) reticulocyten/100 erytrocyten^^gecorrigeerd voor hematocriet:getalsfractie:moment:bloed:kwantitatief:
pl-PL Polish (Poland) Retykulocyty/100 erytrocytów^^dostosowany do hematokrytu:frakcja liczbowa:punkt w czasie:krew:ilościowy:
pt-BR Portuguese (Brazil) Reticulóctos/100 eritrócitos^^hematócrito corrigido:NFr:Pt:Eritroc:Qn:
Synonyms: ; Retics; Retic; Reticulocyte; Polychromatophilic red cells; Hct; PCV; Red blood corpusles; Red blood corpuscle; Erthrocyte; Erythrocyte; Red blood cell; Red cell; Red cells; Discocytes; Red blood cells; RBCS; Hct adj; Fr; Number fraction; Percent; Point in time; Random; Quantitative; QNT; Quant; Quan; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS; Reticulocyte Index; RI
zh-CN Chinese (China) 网织红细胞/红细胞^^经过针对血细胞压积而调整的:计数型分数:时间点:全血:定量型:
Synonyms: HCT;红细胞压积;红细胞容量;红细胞比容;红细胞比率;红细胞比积;血球比率;血细胞容量;血细胞比容;血细胞比积 RBC;RBCS;盘状细胞;红血球;红血细胞;血液制品 - 红细胞 RBC;盘状细胞;红血球;红血细胞 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 数量型分数;数量或计数型分数;数量型分数或计数型分数 时刻;随机;随意;瞬间 经过针对血细胞压积（HCT）而调整的;经过针对血细胞容量而调整的;经过针对血细胞比容而调整的;经过针对血细胞比积而调整的 网状红血球;网状红血细胞;网织红 血;血液 血液学/细胞计数;血液学与细胞计数

Example Units

Unit Source
% Example UCUM Units
% REGENSTRIEF

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