Version 2.77

Term Description

During the first 4-6 months of life reverse grouping on infants may reflect maternal antibodies and it may take several months for newborns to develop their own antibodies against the A and B antigens not present on their own cells. Because of this, blood typing of infants often involves only forward grouping. In some jurisdictions, legislation dictates confirmation of blood grouping after a certain age (6 months in France).
Source: Regenstrief LOINC

Part Descriptions

LP14926-7   K
Kell is highly polymorphic. It has two major codominant alleles, k and K, which result from a SNP (698C→T), and the corresponding k and K antigens differ by a single amino acid change (T193M). Mostly IgG antibodies, so IgM is uncommon. Anti-K does not bind complement. If hemolysis does occur, it is extravascular in nature. Anti-K can cause a severe hemolytic transfusion reaction and severe fetal anemia. In the RBC membrane, the Kell glycoprotein is covalently linked to the XK protein, a multipass membrane protein thought to have a role in transport. In the absence of XK, a condition called McLeod syndrome, Kell antigens are only weakly expressed and the RBCs are abnormal with spiky projections (acanthocytosis). Systemic findings include muscular dystrophy, cardiomyopathy, psychiatric disturbances, and neurological defects, such as loss of reflexes and movement disorders. The frequency of K antigens is 2% in Blacks, 9% in Caucasians, up to 25% in Arabs populations. Beck L, Blood groups and red cell antigens. NCBI Bookself [Internet Book], 2005. Source: National Library of Medicine, K

LP412133-3   during infancy BldBk
During the first 4-6 months of life reverse grouping on infants may reflect maternal antibodies and it may take several months for newborns to develop their own antibodies against the A and B antigens not present on their own cells. Because of this, blood typing of infants often involves only forward grouping. In some jurisdictions, legislation dictates confirmation of blood grouping after a certain age (6 months in France). Source: Regenstrief LOINC

Fully-Specified Name

Component
K Ag^during infancy
Property
PrThr
Time
Pt
System
RBC
Scale
Ord
Method

Additional Names

Short Name
K Ag infant RBC Ql
Display Name
K Ag during infancy Ql (RBC)
Consumer Name Alpha Get Info
K antigen During Infancy, Red blood cells

Example Answer List: LL5464-4

Source: Regenstrief LOINC
Answer Code Score Answer ID
Double population

Representing a mixed population of 2 types

 LA30465-1
PositiveCopyright http://snomed.info/sct ID:10828004 Positive (qualifier value) LA6576-8
NegativeCopyright http://snomed.info/sct ID:260385009 Negative (qualifier value) LA6577-6

Basic Attributes

Class
BLDBK
Type
Laboratory
First Released
Version 2.67
Last Updated
Version 2.67
Order vs. Observation
Both

Member of these Panels

LOINC Long Common Name
93939-7 Rh antigens and K Ag during infancy panel - Blood

Language Variants Get Info

Tag Language Translation
es-MX Spanish (Mexico) K Ag ^ durante la infancia:Presencia o umbral:Punto temporal:Eritrocitos:Ordinal:
es-ES Spanish (Spain) K Antígeno^Durante la infancia:PrThr:Punto temporal:Glóbulos rojos:Ord:
fr-FR French (France) KEL1 (K) antigène < 6 mois:Présence/Seuil:Ponctuel:Érythrocytes:Qualitatif:
it-IT Italian (Italy) K , Ag^durante l'infanzia:PrThr:Pt:RBC:Ord:
Synonyms: Banca del sangue Globuli rossi Presenza o Soglia Punto nel tempo (episodio)
zh-CN Chinese (China) K 抗原^婴儿期期间:存在情况或阈值:时间点:红细胞:序数型:
Synonyms: Ag K 型 K 抗原 RBC;RBCS;红血球;红血细胞;赤血球 依次型;分类顺序型;定性的;序数型（或称等级型）;性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型 婴儿期（幼儿期、幼年期）期间;婴儿期;在婴儿期的过程中 存在情况;存在;存在与否;是否存在;阈值;界值;界限;阀值;临界值;存在情况（存在、存在与否、是否存在）或阈值（界值、界限、阀值、临界值） 时刻;随机;随意;瞬间 血库;血库检验;血库检验类;血库检验项目;血库检验项目类;血库类;血库试验;血库试验项目;血库试验项目类

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=93934-8