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Part Descriptions

LP16352-4   Complement C1q
A subcomponent of complement C1, composed of six copies of three polypeptide chains (A, B, and C), each encoded by a separate gene (C1QA; C1QB; C1QC). This complex is arranged in nine subunits (six disulfide-linked dimers of A and B, and three disulfide-linked homodimers of C). C1q has binding sites for antibodies (the heavy chain of IMMUNOGLOBULIN G or IMMUNOGLOBULIN M). The interaction of C1q and immunoglobulin activates the two proenzymes COMPLEMENT C1R and COMPLEMENT C1S, thus initiating the cascade of COMPLEMENT ACTIVATION via the CLASSICAL COMPLEMENT PATHWAY. Source: National Library of Medicine, MeSH 2006

LP16352-4   Complement C1q
The complement system is a key part of the immune system and inflammatory response. The system has three pathways: 1) the classic pathway, 2) the alternative pathway, and 3) the lectin activation pathway. Complement (C1) is composed of 3 subunits: C1q, C1r, and C1s. Complement C1q initiates the complement pathway by binding to immunoglobulins. Absent or decreased levels of Complement C1q are seen in patients with acquired angioedema, systemic lupus erythematosus (SLE), polymyositis, and other immune complex diseases. Complement tests measure either the quantity or the activity (function) of complement proteins. In some cases, complement proteins are present but not functional, in which case a functional assay is used to detect the deficiency. Source: Regenstrief Institute

LOINC Names Get Info

Fully-Specified Name
Complement C1q Ab:PrThr:Pt:Ser:Ord:
Long Common Name
Complement C1q Ab [Presence] in Serum
Short Name
C1q Ab Ser Ql
Display Name
Complement C1q Ab Ql (S)
Consumer Name Alpha Get Info
Complement C1q antibody, Blood

Part Model Get Info

  • Component
    Complement C1q Ab
    LP37774-4
    • Analyte
      Complement C1q Ab
      LP37774-4
      • Component Numerator
        Complement C1q Ab
        LP37774-4
      • 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
    Ser
    LP7567-3
    • System Core
      Ser
      LP7567-3
    • Super System
      NULL
       
  • Scale
    Ord
    LP7751-3
  • Method
    NULL
     

Example Answer List: LL360-9

Source: Regenstrief Institute
AnswerCodeScoreAnswer ID
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
HEM/BC
Type
Laboratory
First Released
Version 2.24
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
Both

Language Variants Get Info

TagLanguageTranslation
cs-CZCzech (Czechia)Komplement C1q Ab:Přítomnost nebo práh:Časový bod:Sérum:Ordinální:
de-DEGerman (Germany)Komplement C1q Ak:Nachweis oder Schwellenwert:Zeitpunkt:Serum:Ordinal:
el-GRGreek (Greece)Συμπλήρωμα C1q Αντίσωμα:PrThr:Pt:Ορός:Ord:
Synonyms: HEM/BC Ord PrThr Pt Αντίσωμα Ορός Συμπλήρωμα C1q
es-ESSpanish (Spain)Complemento C1q Anticuerpos:PrThr:Punto temporal:Suero:Ord:
es-MXSpanish (Mexico)Complemento C1q Ab:Presencia o umbral:Punto temporal:Suero:Ordinal:
et-EEEstonian (Estonia)Komplemendi komponent C1q antikehad:PrThr:Pt:S:Ord:
Synonyms: Järgarvuline Juhuslik Seerum
fr-CAFrench (Canada)Complément C1q, Ac:Présence-Seuil:Temps ponctuel:Sérum:Ordinal:
fr-FRFrench (France)Complément C1q Ac:Présence/Seuil:Ponctuel:Sérum:Qualitatif:
fr-BEFrench (Belgium)Complément C1q Ac:PrThr:Temps ponctuel:Sérum:Ordinal:
Synonyms: Anticorps
it-ITItalian (Italy)Complemento C1q Ab:PrThr:Pt:Siero:Ord:
Synonyms: anticorpo Ematologia (coagulazione) conta differenziale Presenza o Soglia Punto nel tempo (episodio) Siero
nl-NLDutch (Netherlands)complement C1q As:aanwezigheid:moment:serum:ordinaal:
Synonyms: antistof; antilichaam
pl-PLPolish (Poland)Dopełniacz C1q Ab:granica wykrywalności:punkt w czasie:surowica:uporządkowany:
Synonyms: Przeciwciała do składowej C1q dopełniacza Składowa C1q dopełniacza
pt-BRPortuguese (Brazil)Complemento C1q Ac:ACnc:Pt:Soro:Ord:
Synonyms: Complement c1q binding; Complmt; Comp; Arbitrary concentration; Point in time; Random; Serum; SR; Ql; Ordinal; QL; Qualitative; Qual; Screen; Antibodies; Autoantibody; Antibody; Autoantibodies; Antby; Acy; Anti; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS
ru-RURussian (Russian Federation)Комплемент C1q Ат:PrThr:ТчкВрм:Сыв:Пор:
Synonyms: Антитело Порядковый Сыворотка Точка во времени;Момент
tr-TRTurkish (Turkey)Kompleman C1q Ab:MevcEşik:Zmlı:Ser:Srl:
Synonyms: Ak Mevcut
zh-CNChinese (China)补体 C1q 抗体:存在情况或阈值:时间点:血清:序数型:
Synonyms: Ab;自身抗体 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 血液学/细胞计数;血液学与细胞计数 补体 C1q Ab

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=53020-4