LOINC
Version 2.71

731-0Lymphocytes [#/volume] in Blood by Automated countActive

Term Description

Automated instrumentation performs white blood cell count and calculates the absolute lymphocyte count.
Source: Regenstrief Institute

Part Descriptions

LP14540-6   Lymphocytes
White blood cells formed in lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin whereas the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T cells (transit through the thymus), B cells or natural killer cells (NK). Source: National Library of Medicine, MeSH 2006

LP14540-6   Lymphocytes
A lymphocyte is a type of white blood cell in the vertebrate immune system.

A lymphocyte count is usually part of a peripheral complete blood cell count and is expressed as percentage of lymphocytes to total white blood cells counted. A general increase in the number of lymphocytes is known as lymphocytosis whereas a decrease is lymphocytopenia.

An increase in lymphocyte concentration is usually a sign of a viral infection (in some rare case, leukemias are found through an abnormally raised lymphocyte count in an otherwise normal person).

A low normal to low absolute lymphocyte concentration is associated with increased rates of infection after surgery or trauma. 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, Lymphocytes (Wikipedia)

Fully-Specified Name

Component
Lymphocytes
Property
NCnc
Time
Pt
System
Bld
Scale
Qn
Method
Automated count

Additional Names

Short Name
Lymphocytes # Bld Auto
Display Name
Lymphocytes Auto (Bld) [#/Vol]
Consumer Name Alpha
Lymphocytes, Blood

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.40
Order vs. Observation
Observation
Common US Lab Results Rank
35
Common SI Lab Results Rank
35

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help This cell type is counted by all modern automated differential machines; so most results will be reported under the LOINC code with method of automated count. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations
Mapping Guidance Regenstrief Help This category is used only in manual counts so avoid [LOINC: 26471-3] and use [LOINC: 730-2]. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Member of these Panels

LOINC Long Common Name
57023-4 Auto Differential panel - Blood
57021-8 CBC W Auto Differential panel - Blood
57022-6 CBC W Reflex Manual Differential panel - Blood
24361-8 Deprecated Hemogram, platelets & Differential panel in Blood
24364-2 Obstetric 1996 panel - Serum and Blood
93340-8 PhenX - complete blood count protocol 220501
65758-5 T-cell helper (CD4) subset panel - Blood

Member of these Groups

LG32863-9 Lymphocytes|NCnc|Pt|Bld

Language Variants Get Info

zh-CNChinese (China)
淋巴细胞:计数型浓度:时间点:全血:定量型:自动化计数方法
nl-NLDutch (Netherlands)
lymfocyten:aantal/volume:moment:bloed:kwantitatief:geautomatiseerde telling
et-EEEstonian (Estonia)
Lümfotsüüdid:NCnc:Pt:B:Qn:Automaatloendus
fr-BEFrench (Belgium)
Lymphocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
fr-CAFrench (Canada)
Lymphocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
fr-FRFrench (France)
Lymphocytes totaux:Nombre/Volume:Ponctuel:Sang:Numérique:Comptage automate
it-ITItalian (Italy)
Linfociti:NCnc:Pt:Sangue:Qn:Conta automatica
ko-KRKorean (Korea, Republic of)
림프구:계수/부피:검사시점:전혈:정량:자동계수
pt-BRPortuguese (Brazil)
Linfócitos:NCnc:Pt:SgTotal:Qn:Contagem automática
ru-RURussian (Russian Federation)
Лимфоциты:КолОб:ТчкВрм:Кр:Колич:Автоматизированный подсчет
es-ARSpanish (Argentina)
linfocitos:concentración de número:punto en el tiempo:sangre:cuantitativo:recuento automático
es-ESSpanish (Spain)
Linfocitos:Concentración de número:Punto temporal:Sangre:Qn:Contaje automático
tr-TRTurkish (Turkey)
Lenfositler:SayKons:Zmlı:Kan:Kant:Otomatize sayım

Example Units

Unit Source
10^9/L eCHN
10*3/uL Example UCUM Units
k/cumm REGENSTRIEF

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=731-0