Version 2.77

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 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

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help Reticulocytes are reported as percents (per 100) of RBC's even if based on a count of 1000 RBC's or more. So the right term for a manual count is [LOINC: 31112-6] regardless of the number of cells counted. However, today it is most likely that these are done by automated methods [LOINC: 17849-1], not manual methods. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Fully-Specified Name

Reticulocytes/100 erythrocytes
Automated count

Additional Names

Short Name
Retics/100 RBC NFr Auto
Display Name
Reticulocytes/100 RBC Auto (Bld)
Consumer Name Alpha Get Info
Reticulocytes per 100 Red Blood Cells, Blood

Basic Attributes

First Released
Version 1.0l
Last Updated
Version 2.73
Change Reason
The system of RBC had been an oversight. Reticulocytes are red blood cells, but the system of interest is blood. Changed Order_Obs from 'Observation Only' to fit the current order use cases.
Order vs. Observation
Common Test Rank Get Info

Member of these Panels

LOINC Long Common Name
50262-5 Reticulocytes panel - Blood

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Retikulozyten/100 Erythrozyten:Anzahl pro Fraktion:Zeitpunkt:Blut:Quantitativ:Automatisierte Zählung
el-GR Greek (Greece) Δικτυοερυθροκύτταρα/100 ερυθρά αιμοσφαίρια:Αριθμητικό κλάσμα:Χρονική στιγμή:Αίμα:Ποσοτική:Αυτόματη μέτρηση
Synonyms: ΔΕΚ
es-AR Spanish (Argentina) reticulocitos/100 eritrocitos:fracción de un número:punto en el tiempo:eritrocitos:cuantitativo:recuento automático
es-MX Spanish (Mexico) Reticulocitos / 100 eritrocitos:Fracción numérica:Punto temporal:Sangre:Cuantitativo:Recuento automatizado
es-ES Spanish (Spain) Reticulocitos/100 eritrocitos:Fracción numérica:Punto temporal:Sangre:Qn:Contaje automático
Synonyms: Cuantitativo
et-EE Estonian (Estonia) Retikulotsüüdid/100 erütrotsüüdi kohta:NFr:Pt:B:Qn:Automaatloendus
Synonyms: Juhuslik Kvantitatiivne Veri
fr-CA French (Canada) Réticulocytes/100 érythrocytes:Fraction numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
fr-BE French (Belgium) Réticulocytes/100 érythrocytes:Fraction numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
Synonyms: Globules rouges, GR
fr-FR French (France) Réticulocytes/100 érythrocytes:Fraction de nombres:Ponctuel:Sang:Numérique:Comptage automate
it-IT Italian (Italy) Reticolociti/100 eritrociiti:NFr:Pt:Sangue:Qn:Conta automatica
Synonyms: Ematologia (coagulazione) conta differenziale Frazione numerica Punto nel tempo (episodio) Sangue
ko-KR Korean (Korea, Republic Of) 그물적혈구/100 적혈구:숫자분획:검사시점:적혈구:정량:자동계수
nl-NL Dutch (Netherlands) reticulocyten/100 erytrocyten:getalsfractie:moment:bloed:kwantitatief:geautomatiseerde telling
pl-PL Polish (Poland) Retykulocyty/100 erytrocytów:frakcja liczbowa:punkt w czasie:krew:ilościowy:automatyczne liczenie
pt-BR Portuguese (Brazil) Reticulócitos/100 eritrócitos:NFr:Pt:Eritroc:Qn:Contagem automática
Synonyms: ; Retics; Retic; Reticulocyte; Polychromatophilic red cells; Red blood corpusles; Red blood corpuscle; Erthrocyte; Erythrocyte; Red blood cell; Red cell; Red cells; Discocytes; Red blood cells; RBCS; 100 RBC; Retics/100 RBC; Fr; Number fraction; Percent; Point in time; Random; Quantitative; QNT; Quant; Quan; Auto; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS
ru-RU Russian (Russian Federation) Ретикулоциты/100 эритроцитов:КолДоля:ТчкВрм:Кр:Колич:Автоматизированный подсчет
Synonyms: Количественный Количество отношение Кровь Точка во времени;Момент
tr-TR Turkish (Turkey) Retikülositler/100 eritrosit:SayFr:Zmlı:Kan:Kant:Otomatize sayım
uk-UA Ukrainian (Ukraine) Ретикулоцити/100 еритроцитів:Чисельна Фракція:МоментЧасу:Кров:Кількісно:Автоматизований підрахунок
Synonyms: 100 RBC; Auto; Automated detection; Blood; Discocytes; Elec; Elect; Electr; Erthrocyte; Erythrocyte; Hematology; HEMATOLOGY/CELL COUNTS; Heme; Number Fraction; Percent; Point in time; Polychromatophilic red cells; QNT; Quan; Quant; Quantitative; Random; RBC; RBCS; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; Retic; Retics; Reticulocyte; UniversalLabOrders; WB; Whole blood
zh-CN Chinese (China) 网织红细胞/100 个红细胞:计数型分数:时间点:全血:定量型:自动化计数方法
Synonyms: 100 RBCs;100 RBC RBC;RBCS;盘状细胞;红血球;红血细胞;血液制品 - 红细胞 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 电子化 网状红血球;网状红血细胞;网织红 自动 自动化计数;自动化计数类实验室方法;自动化计数类方法;自动化计数类检验方法;自动计数;自动计数方法;自动计数法;自动计数类实验室方法;自动计数类方法;自动计数类检验方法 自动型 自动法;自动化 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

LOINC Terminology Service (API) using HL7® FHIR® Get Info

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