LOINC
Version 2.68

26464-8Leukocytes [#/volume] in BloodActive

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

Additional Names

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

Basic Attributes

Class
HEM/BC
Type
Laboratory
First Released
Version 2.00
Last Updated
Version 2.66
Change Reason
Changed Order_Obs from 'Observation Only' to fit the current order use cases.
Order vs. Observation
Both
Common US Lab Results Rank
33
Common SI Lab Results Rank
33
CDISC Lab Test
Yes

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help Most leukocyte counts will be done by an automated counter and will be reported under [LOINC: 6690-2]. This term should be used only rarely. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations
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
69742-5 CBC W Differential panel, method unspecified - Blood
57782-5 CBC W Ordered Manual Differential panel - Blood
57022-6 CBC W Reflex Manual Differential panel - Blood
52743-2 Continuity Assessment Record and Evaluation (CARE) tool - Acute Care
52748-1 Continuity Assessment Record and Evaluation (CARE) tool - Home Health Admission
52746-5 Continuity Assessment Record and Evaluation (CARE) tool - Interim
52744-0 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Admission
52745-7 Continuity Assessment Record and Evaluation (CARE) tool - Post Acute Care (PAC) - Discharge
24361-8 Deprecated Hemogram, platelets & Differential panel in Blood
34527-2 Deprecated Hemogram, Platelets, Differential & Reticulocyte panel in Blood
69738-3 Differential panel, method unspecified - 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
48808-0 Leukogram panel - Blood
24318-8 Manual Differential panel - Blood
55429-5 Short blood count panel - Blood

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:
nl-NLDutch (NETHERLANDS)
leukocyten:aantal/volume:moment:bloed:kwantitatief:
et-EEEstonian (ESTONIA)
Leukotsüüdid:NCnc:Pt:B:Qn:
fr-BEFrench (BELGIUM)
Leucocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:
fr-CAFrench (CANADA)
Leucocytes:Concentration numérique:Temps ponctuel:Sang:Quantitatif:
fr-FRFrench (FRANCE)
Leucocytes:Nombre/Volume:Ponctuel:Sang:Numérique:
de-DEGerman (GERMANY)
Leukozyten:NKnz:Pkt:Blut:Qn:
el-GRGreek (GREECE)
Λευκοκύτταρα:Αριθμητική συγκέντρωση:Χρονική στιγμή:Αίμα:Ποσοτική:
it-ITItalian (ITALY)
Leucociti:NCnc:Pt:Sangue:Qn:
ko-KRKorean (KOREA, REPUBLIC OF)
백혈구:계수/부피:검사시점:전혈:정량:
pt-BRPortuguese (BRAZIL)
Leucócitos:NCnc:Pt:SgTotal:Qn:
ru-RURussian (RUSSIAN FEDERATION)
Лейкоциты:КолОб:ТчкВрм:Кр:Колич:
es-ARSpanish (ARGENTINA)
leucocitos:concentración de número:punto en el tiempo:sangre:cuantitativo:
es-ESSpanish (SPAIN)
Leucocitos:Concentración de número:Punto temporal:Sangre:Qn:
tr-TRTurkish (TURKEY)
Lökositler:SayKons:Zmlı:Kan:Kant:

Example Units

Unit Source
10*3/uL Example UCUM Units
#/mm3 REGENSTRIEF
k/cumm REGENSTRIEF

Units and Range

Range
10*9;/L:[4.4,11.3]
Unit Type

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=26464-8