LOINC
Version 2.71

788-0Erythrocyte distribution width [Ratio] by Automated countActive

Term Description

The RDW-CV is the ratio of the variation in width to the mean width of the RBC volume distribution curve taken at +/- 1CV.
Source: Regenstrief LOINC

Part Description

LP17698-9   Erythrocyte distribution width
Red Cell Distribution Width (RDW) is a measurement of anisocytosis. RDW is elevated in iron deficiency anemia and beta thalassemia major and usually normal in beta thalassemia minor. RDW has also been shown to be significantly increased in pregnant women during gestational week 34 through labor onset. Information from Laboratory Test Handbook, Jacobs DS, DeMott WR,Oxley DK;LexiComp,2001. Source: Regenstrief Institute

Fully-Specified Name

Component
Erythrocyte distribution width
Property
Ratio
Time
Pt
System
RBC
Scale
Qn
Method
Automated count

Additional Names

Short Name
RDW RBC Auto-Rto
Display Name
Erythrocyte distribution width Auto (RBC) [Ratio]
Consumer Name Alpha
Red Blood Cell Distribution Width (RDW), Red blood cells

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.70
Change Reason
Release 2.68: DefinitionDescription: Corrected "ot" to "of" in term description.
Order vs. Observation
Observation
Common US Lab Results Rank
24
Common SI Lab Results Rank
24

Formula (Readable)

SD of red cell size distribution/MCV

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help Erythrocyte distribution width (EDW) can be reported with units of % or volume (fL). For units reported as %, use [LOINC: 788-0]. For EDW reported in volume units, use [LOINC: 21000-5]. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Member of these Panels

LOINC Long Common Name
58410-2 CBC panel - Blood by Automated count
57021-8 CBC W Auto Differential panel - Blood
57782-5 CBC W Ordered Manual Differential panel - Blood
57022-6 CBC W Reflex Manual Differential panel - Blood
24364-2 Obstetric 1996 panel - Serum and Blood
93340-8 PhenX - complete blood count protocol 220501

Language Variants Get Info

zh-CNChinese (China)
红细胞分布宽度:比率:时间点:红细胞:定量型:自动化计数方法
nl-NLDutch (Netherlands)
erytrocyten distributiebreedte:verhouding:moment:erytrocyten:kwantitatief:geautomatiseerde telling
et-EEEstonian (Estonia)
Erütrotsüütide suurusjaotuvus:Suhe:Pt:RBC:Qn:Automaatloendus
fr-BEFrench (Belgium)
Indice de distribution de volume érythrocytaire:Ratios:Temps ponctuel:GR:Quantitatif:Décompte automatisé
fr-CAFrench (Canada)
Indice de distribution des volumees érythrocytaires:Ratios:Temps ponctuel:GR:Quantitatif:Décompte automatisé
fr-FRFrench (France)
Indice de distribution érythrocytaire:Ratio:Ponctuel:Érythrocytes:Numérique:Comptage automate
it-ITItalian (Italy)
Eritrociti, ampiezza distribuzione:Rapporto:Pt:RBC:Qn:Conta automatica
ko-KRKorean (Korea, Republic of)
적혈구 분포 폭:비율:검사시점:적혈구:정량:자동계수
pt-BRPortuguese (Brazil)
Amplitude de distribuição do tamanho dos eritrócitos:Ratio:Pt:Eritroc:Qn:Contagem automática
ru-RURussian (Russian Federation)
Эритроцит распределение ширина:Отношение:ТчкВрм:Эритроциты:Колич:Автоматизированный подсчет
es-ARSpanish (Argentina)
ancho de distribución eritrocitaria:relación:punto en el tiempo:eritrocitos:cuantitativo:recuento automático
es-ESSpanish (Spain)
Ancho de distribución eritrocitaria:Fracción:Punto temporal:Glóbulos rojos:Qn:Contaje automático
tr-TRTurkish (Turkey)
Eritrosit dağılım genişliği:Oran:Zmlı:Eritrosit:Kant:Otomatize sayım

Example Units

Unit Source
% Example UCUM Units
% REGENSTRIEF

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=788-0