Version 2.78

Term Description

The RDW-SD is determined from the RBC volume distribution curve. It is calculated from the width of the curve at 20% of the peak count.
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
EntVol
Time
Pt
System
RBC
Scale
Qn
Method

Additional Names

Short Name
RDW RBC
Display Name
Erythrocyte distribution width (RBC) [Entitic vol]
Consumer Name Alpha Get Info
Red Blood Cell Distribution Width (RDW), Red blood cells

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 2.04
Last Updated
Version 2.73
Order vs. Observation
Observation
Common Test Rank Get Info
62

Member of these Panels

LOINC Long Common Name
69742-5 CBC W Differential panel, method unspecified - Blood
24361-8 Deprecated Hemogram, platelets & Differential panel in Blood
34527-2 Deprecated Hemogram, Platelets, Differential & Reticulocyte panel in Blood
24317-0 Hemogram and platelets WO differential panel - Blood
24359-2 Hemogram without Platelets and with Manual Differential panel - Blood
24358-4 Hemogram without Platelets panel - Blood

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: RDW-SD
de-DE German (Germany) Erythrozytenverteilungsbreite:Entitisches Volumen:Zeitpunkt:Erythrozyten:Quantitativ:
Synonyms: Ery-Größenvariabilität; RDW; Red Blood Cell Distribution Width; EVB; RBC
es-AR Spanish (Argentina) ancho de distribución eritrocitaria:volumen entítico:punto en el tiempo:eritrocitos:cuantitativo:
es-ES Spanish (Spain) Ancho de distribución eritrocitaria:Volumen entítico:Punto temporal:Glóbulos rojos:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Ancho de distribución de eritrocitos:Volumen entítico:Punto temporal:Eritrocitos:Cuantitativo:
fr-CA French (Canada) Indice de distribution des volumes érythrocytaires:Volume entitique:Temps ponctuel:GR:Quantitatif:
fr-FR French (France) Indice de distribution érythrocytaire:Volume d'entité:Ponctuel:Érythrocytes:Numérique:
fr-BE French (Belgium) Indice de distribution de volume érythrocytaire:Volume entitique:Temps ponctuel:GR:Quantitatif:
Synonyms: VGW
it-IT Italian (Italy) Eritrociti, ampiezza distribuzione:EntVol:Pt:RBC:Qn:
Synonyms: Ampiezza di distribuzione degli eritrociti Ematologia (coagulazione) conta differenziale Globuli rossi Punto nel tempo (episodio) Volume entitico
ko-KR Korean (Korea, Republic Of) 적혈구 분포 폭:측정물질의 부피:검사시점:적혈구:정량:
nl-NL Dutch (Netherlands) erytrocyten distributiebreedte:volume/eenheid:moment:erytrocyten:kwantitatief:
Synonyms: RDW rode bloedcellen
pl-PL Polish (Poland) Rozpiętość rozkładu objętości erytrocytów:objętość zawarta w:punkt w czasie:krwinki czerwone:ilościowy:
pt-BR Portuguese (Brazil) Amplitude de distribuição do tamanho dos eritrócitos:EntVol:Pt:Eritroc:Qn:
Synonyms: ; RDW; Erythrocyte morphology index; RCMI; Erythrocytes; Red blood corpusles; Red blood corpuscle; Red blood cell; Red cell; Red cells; Discocyte; Erc; Red blood cells; Entitic volume; Point in time; Random; Quantitative; QNT; Quant; Quan; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS; RDW-SD
ru-RU Russian (Russian Federation) Эритроцит распределение ширина:СущнОб:ТчкВрм:Эритроциты:Колич:
Synonyms: Индекс ширины кривой распределения объема эритроцитов Количественный Сущность объём Точка во времени;Момент
tr-TR Turkish (Turkey) Eritrosit dağılım genişliği:EntHcm:Zmlı:Eritrosit:Kant:
Synonyms: RBC
zh-CN Chinese (China) 红细胞分布宽度:实体体积:时间点:红细胞:定量型:
Synonyms: RBC;RBCS;红血球;红血细胞;赤血球 RBC;盘状细胞;红血球;红血细胞 RDW-SD 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 实体容积 宽 时刻;随机;随意;瞬间 红细胞体积分布宽度-SD 红细胞体积分布宽度标准差 红细胞分布宽度（Erythrocyte Distribution Width，RDW）;红细胞形态学指数;红细胞形态学指数（Erythrocyte morphology index）;红细胞形态学指标 红细胞分布宽度-SD 红细胞分布宽度标准差 血液学/细胞计数;血液学与细胞计数

Example Units

Unit Source
fL Example UCUM Units
fL REGENSTRIEF

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=30384-2