LOINC
Version 2.68

6690-2Leukocytes [#/volume] in Blood by Automated countActive

Part Description

LP14419-3   Leukocytes
Leukocytes or white blood cells (WBCs) are immune cells that fight infection, neoplasms and other inflammatory conditions, and mediate allergic responses. There are five types of WBCs normally present in the circulation that are all derived from a similar stem cell in the bone marrow. The five type of WBCs are divided into two groups based on the presence or absence of granules in the cytoplasm. The granulocytes include the neutrophils, basophils and eosinophils. The non-granulocytes include the lymphocytes and the monocytes. The neutrophils fight infection by ingesting and digesting bacteria. Eosinophils and basophils respond to allergic reactions and are capable of ingesting antigen-antibody complexes. Monocytes phagocytose bacteria and release interferon to stimulate the immune system. Lymphocytes are divided into T-cells and B-cells. T-cell immunity is cellular and involves the activation of phagocytes and B-cell immunity uses antibodies to fight infection. Both elevated and low leukocyte counts can be markers of infection and malignancy, and low leukocyte counts are associated with a variety of primary and secondary immunodeficiencies, depending on the WBC type(s) that are out of range. (Mosby's manual of diagnostic and laboratory tests, Kathleen Deska Pagana; Timothy James Pagana, Elsevier St. Louis, Mo ©2010) Source: Regenstrief LOINC

Fully-Specified Name

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

Additional Names

Short Name
WBC # Bld Auto
Display Name
WBC Auto (Bld) [#/Vol]

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 1.0g
Last Updated
Version 2.52
Change Reason
Changed Order_Obs from 'Observation Only' to fit the current order use cases.
Order vs. Observation
Both
Common US Lab Results Rank
15
Common SI Lab Results Rank
15

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2001-2019 American Association for Clinical Chemistry White Blood Cell Count (WBC)

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

Member of these Groups

LG32857-1 Leukocytes|NCnc|Pt|Bld

Language Variants Get Info

zh-CNChinese (CHINA)
白细胞:计数型浓度:时间点:全血:定量型:自动化计数方法
nl-NLDutch (NETHERLANDS)
leukocyten:aantal/volume:moment:bloed:kwantitatief:geautomatiseerde telling
et-EEEstonian (ESTONIA)
Leukotsüüdid:NCnc:Pt:B:Qn:Automaatloendus
fr-BEFrench (BELGIUM)
Leucocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
fr-CAFrench (CANADA)
Leucocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:Décompte automatisé
fr-FRFrench (FRANCE)
Leucocytes:Nombre/Volume:Ponctuel:Sang:Numérique:Comptage automate
de-DEGerman (GERMANY)
Leukozyten:NKnz:Pkt:Blut:Qn:Automatisierte Zählung
el-GRGreek (GREECE)
Λευκοκύτταρα:Αριθμητική συγκέντρωση:Χρονική στιγμή:Αίμα:Ποσοτική:Αυτόματη μέτρηση
it-ITItalian (ITALY)
Leucociti:NCnc:Pt:Sangue:Qn:Conta automatica
ko-KRKorean (KOREA, REPUBLIC OF)
백혈구:계수/부피:검사시점:전혈:정량:자동계수
pt-BRPortuguese (BRAZIL)
Leucócitos:NCnc:Pt:SgTotal:Qn:Contagem automática
ru-RURussian (RUSSIAN FEDERATION)
Лейкоциты:КолОб:ТчкВрм:Кр:Колич:Автоматизированный подсчет
es-ARSpanish (ARGENTINA)
leucocitos:concentración de número:punto en el tiempo:sangre:cuantitativo:recuento automático
es-ESSpanish (SPAIN)
Leucocitos:Concentración de número:Punto temporal:Sangre:Qn:Contaje automático
tr-TRTurkish (TURKEY)
Lökositler:SayKons:Zmlı:Kan:Kant:Otomatize sayım

Example Units

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

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=6690-2