LOINC
Version 2.72

1094-2K Ag [Presence] on Red Blood Cells from Blood product unitActive

Part Description

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

Fully-Specified Name

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

Additional Names

Short Name
K Ag RBC BPU Ql
Display Name
K Ag Ql (RBC BPU)
Consumer Name Alpha
K antigen, Blood Product Unit

Basic Attributes

Class
BLDBK
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.56
Change Reason
The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.
Order vs. Observation
Observation

Member of these Panels

LOINC Long Common Name
93915-7 Rh antigens and K Ag panel - Blood from Blood product unit

Language Variants Get Info

zh-CNChinese (China)
K 抗原:存在情况或阈值:时间点:红细胞^血液制品单位:序数型:
nl-NLDutch (Netherlands)
K Ag:aanwezigheid:moment:erytrocyten^bloedproducteenheid:ordinaal:
fr-BEFrench (Belgium)
K Ag:PrThr:Temps ponctuel:GR^Unité de produit sanguin:Ordinal:
fr-CAFrench (Canada)
K , Ag:Présence-Seuil:Temps ponctuel:GR^Unité de produit sanguin:Ordinal:
fr-FRFrench (France)
KEL1 (K) antigène:Présence/Seuil:Ponctuel:Érythrocytes poche de sang:Qualitatif:
it-ITItalian (Italy)
K , Ag:PrThr:Pt:RBC^Unità prodotto sangue:Ord:
ko-KRKorean (Korea, Republic of)
k 항원:임의농도:검사시점:적혈구^혈액제제단위:순위척도:
pt-BRPortuguese (Brazil)
K Ag:ACnc:Pt:Eritroc^bolsa de sangue:Ord:
ru-RURussian (Russian Federation)
K Аг:PrThr:ТчкВрм:Эритроциты^КПЕ:Пор:
es-ARSpanish (Argentina)
[antígeno-] K [Ag]:concentración arbitraria:punto en el tiempo:eritrocitos^unidad de hemoderivado:ordinal:
es-MXSpanish (Mexico)
K Ag:Presencia o umbral:Punto temporal:Eritrocitos ^ Unidad de hemoderivado:Ordinal:
es-ESSpanish (Spain)
K Antígeno:PrThr:Punto temporal:Glóbulos rojos^Unidad de hemoderivado:Ord:
tr-TRTurkish (Turkey)
K Ag:MevcEşik:Zmlı:Eritrosit^KanÜrÜ:Srl:

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=1094-2