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Part Description

LP15249-3   Y little t super little a
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^b

LOINC Names Get Info

Fully-Specified Name
Y little t super little a Ag:PrThr:Pt:RBC^Donor:Ord:
Long Common Name
Yt sup(a) Ag [Presence] on Red Blood Cells from Donor
Short Name
Yt sup(a) Ag RBC Donr Ql
Display Name
Yt sup(a) Ag Ql (RBC donor)
Consumer Name Alpha Get Info
Yt sup(a) antigen, Donor Red blood cells

Part Model Get Info

  • Component
    Y little t super little a Ag
    LP40185-8
    • Analyte
      Y little t super little a Ag
      LP40185-8
      • Component Numerator
        Y little t super little a Ag
        LP40185-8
        • Component Numerator Core
          Y little t super little a
          LP15249-3
        • Component Numerator Core Suffix
          Ag
          LP20666-1
      • Component Denominator
        NULL
         
        • Component Denominator Core
          NULL
           
        • Component Denominator Core Suffix
          NULL
           
    • Challenge
      NULL
       
    • Adjustment
      NULL
       
    • Count
      NULL
       
  • Property
    PrThr
    LP217195-9
  • Time
    Pt
    LP6960-1
  • System
    RBC^Donor
    LP30227-0
  • Scale
    Ord
    LP7751-3
  • Method
    NULL
     

Basic Attributes

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

TagLanguageTranslation
cs-CZCzech (Czechia)Y little t super little a Ag:Přítomnost nebo práh:Časový bod:Erytrocyty^Dárce:Ordinální:
el-GRGreek (Greece)Υ πεζό t εκθέτης πεζό a Αντιγόνο:PrThr:Pt:Ερυθρά αιμοσφαίρια^Δότης:Ord:
Synonyms: A BLDBK Ord PrThr Pt Αντιγόνο Δότης Ερυθρά αιμοσφαίρια Υ πεζό t εκθέτης πεζό a
es-ARSpanish (Argentina)[antígeno] Y [minúscula] T [superíndice] [minúscula] A [Ag]:concentración arbitraria:punto en el tiempo:eritrocitos^donante:ordinal:
es-ESSpanish (Spain)Yta Antígeno:PrThr:Punto temporal:Glóbulos rojos^donante:Ord:
es-MXSpanish (Mexico)Y sub t super sub a Ag:Presencia o umbral:Punto temporal:Eritrocitos ^ Donante:Ordinal:
et-EEEstonian (Estonia)Yt^a antigeen:PrThr:Pt:RBC^doonor:Ord:
Synonyms: Erütrotsüüdid Järgarvuline Juhuslik
fr-CAFrench (Canada)Y petit t exposant petit a, Ag:Présence-Seuil:Temps ponctuel:GR^Donneur:Ordinal:
fr-FRFrench (France)YT1 (Yta) Ag:Présence/Seuil:Ponctuel:Érythrocytes^donneur:Qualitatif:
fr-BEFrench (Belgium)Y petit t exposant petit a Ag:PrThr:Temps ponctuel:GR^Donneur:Ordinal:
Synonyms: Antigène
it-ITItalian (Italy)Y t minuscola apice a, Ag:PrThr:Pt:RBC^donatore:Ord:
Synonyms: Banca del sangue Globuli rossi Presenza o Soglia Punto nel tempo (episodio) Yt^a
ko-KRKorean (Korea, Republic Of)Yt^a 항원:임의농도:검사시점:적혈구^공혈자:순위척도:
nl-NLDutch (Netherlands)Y kleine t super kleine a Ag:aanwezigheid:moment:erytrocyten^donor:ordinaal:
Synonyms: antigeen rode bloedcellen
pt-BRPortuguese (Brazil)Y t pequeno a pequeno superior Ag:ACnc:Pt:Eritroc^doador:Ord:
Synonyms: ; Yt sup(a); Yt^a; Y (little t) (little a); Arbitrary concentration; Point in time; Random; Erythrocytes; Red blood corpusles; Red blood cells; Donr; Ql; Ordinal; QL; Qualitative; Qual; Screen; Antigen; Antigens; T prime; BLOOD BANK
ru-RURussian (Russian Federation)Y малое t супер малое a Аг:PrThr:ТчкВрм:Эритроциты^донор:Пор:
Synonyms: Порядковый Точка во времени;Момент
tr-TRTurkish (Turkey)Y küçük t süper küçük a Ag:MevcEşik:Zmlı:Eritrosit^verici:Srl:
Synonyms: Antijen Mevcut RBC
zh-CNChinese (China)Yt^a 抗原:存在情况或阈值:时间点:红细胞^供体:序数型:
Synonyms: A 型 A 型抗原 Ag RBC;RBCS;红血球;红血细胞;赤血球 RBC^供体 RBC^捐赠者 Y little t super little a 型抗原 Y little t super little a 抗原 Y little t super little a;Y little t super little a 型;Yt^a 型 Yt^a 型抗原 供血者;捐献者;捐赠者;给予体;给体;超系统 - 供体 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 红细胞^捐赠者 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=1346-6