Version 2.80

Part Description

LP15250-1   Y little t super little b
The two antigens of the Yt system, Yt^a and Yt^b, are both expressed at birth, however in a slightly lower expression level than seen on adult cells. They were shown to be resistant to trypsin treatment, but sensitive to other protein cleaving enzymes. Antibodies to these antigens were implicated in cases of delayed transfusion reactions but were not reported to have caused hemolytic disease of the newborn. No examples of Yt(a-b-) individuals have been found despite numerous studies. From population studies, Yt^b appeared to be lacking, or of very low incidence, from Orientals, Amer-Indians and southern Africans; Yta was found lacking in approximately one per thousand individuals of European origin.

This system remained unexciting until it was found that both of these antigens were weak or absent from paroxysmal nocturnal hemoglobinuria (PNH) III red blood cells. With a rush of activity in the early 1990's, it was found that the Yt blood group system antigens represented amino acid substitutions on the GPI-linked glycoprotein, acetylcholinesterase (AchE). This protein probably exists as a dimer (pair) in the red cell membrane. Yta and Ytb are equated to substitutions of a hisitidine and asparagine, respectively, at amino acid position 322 on the GPI-linked glycoprotein. AChE has been assigned a chromosome location at 7q22. Source: Serum, Cells and Rare Fluid Exchange , Yt^a

Fully-Specified Name

Component
Y little t super little b Ab
Property
PrThr
Time
Pt
System
Ser/Plas
Scale
Ord
Method

Additional Names

Long Common Name
Yt sup(b) Ab [Presence] in Serum or Plasma
Short Name
Yt sup(b) Ab SerPl Ql
Display Name
Yt sup(b) Ab Ql
Consumer Name Alpha Get Info
Yt sup(b) antibody, Blood

Basic Attributes

Class
BLDBK
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.56 (MIN)
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

Language Variants Get Info

Tag Language Translation
el-GR Greek (Greece) Υ πεζό t εκθέτης πεζό b Αντίσωμα:PrThr:Pt:Ορός/Πλάσμα:Ord:
Synonyms: PrThr
es-AR Spanish (Argentina) [anticuerpo anti - ] Y [minúscula] T [superíndice] [minúscula] B [Ac]:concentración arbitraria:punto en el tiempo:suero/plasma:ordinal:
es-ES Spanish (Spain) Ytb Anticuerpos:PrThr:Punto temporal:Suero o Plasma:Ord:
es-MX Spanish (Mexico) Y sub t super sub b Ab:Presencia o umbral:Punto temporal:Suero o Plasma:Ordinal:
et-EE Estonian (Estonia) Yt^b antikehad:PrThr:Pt:S/P:Ord:
Synonyms: Järgarvuline Juhuslik Plasma Seerum Seerum või plasma
fr-CA French (Canada) Y petit t exposant petit b, Ac:Présence-Seuil:Temps ponctuel:Sérum/Plasma:Ordinal:
fr-FR French (France) YT2 (Ytb) anticorps:Présence/Seuil:Ponctuel:Sérum/Plasma:Qualitatif:
fr-BE French (Belgium) Y petit t exposant petit b Ac:PrThr:Temps ponctuel:Sérum/Plasma:Ordinal:
Synonyms: Anticorps
it-IT Italian (Italy) Y t minuscola apice b Ab:PrThr:Pt:Siero/Plasma:Ord:
Synonyms: anticorpo Banca del sangue Plasma Presenza o Soglia Punto nel tempo (episodio) Siero Siero o Plasma Yt^b
ko-KR Korean (Korea, Republic Of) Yt^b 항체:임의농도:검사시점:혈청/혈장:순위척도:
nl-NL Dutch (Netherlands) Y kleine t super kleine b As:aanwezigheid:moment:serum of plasma:ordinaal:
Synonyms: antistof; antilichaam
pt-BR Portuguese (Brazil) Y t pequeno b pequeno superior Ac:ACnc:Pt:Sor/Plas:Ord:
Synonyms: ; Yt sup(b); Yt^b; Y (little t) (little b); Arbitrary concentration; Point in time; Random; SerPl; SerPlas; SerP; Serum; SR; Plasma; Pl; Plsm; Ql; Ordinal; QL; Qualitative; Qual; Screen; Antibodies; Autoantibody; Antibody; Autoantibodies; Antby; Acy; Anti; T prime; BLOOD BANK
ru-RU Russian (Russian Federation) Y малое t супер малое b Ат:PrThr:ТчкВрм:Сыв/Плаз:Пор:
Synonyms: Антитело Плазма Порядковый Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Y küçük t süper küçük b Ab:MevcEşik:Zmlı:Ser/Plaz:Srl:
Synonyms: Mevcut
zh-CN Chinese (China) Yt^b 抗体:存在情况或阈值:时间点:血清/血浆:序数型:
Synonyms: Ab;自身抗体 B 型 B型抗体 Y little t super little b 型抗体 Y little t super little b 抗体 Y little t super little b;Y little t super little b 型;Yt^b 型 Yt^b 型抗体 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 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 血清或血浆

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=1350-8