6297-6

Complement C1q Ag [Units/volume] in Serum

Active

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 Ag:ACnc:Pt:Ser:Qn:
Long Common Name: Complement C1q Ag [Units/volume] in Serum
Short Name: C1q Ag Ser-aCnc
Display Name: Complement C1q Ag Qn (S)
Consumer Name Alpha Get Info: Complement C1q antigen, Blood

Part Model Get Info

Component
Complement C1q Ag
LP37775-1
- Analyte
  Complement C1q Ag
  LP37775-1
  - Component Numerator
    Complement C1q Ag
    LP37775-1
    - Component Numerator Core
      Complement C1q
      LP16352-4
    - 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
ACnc
LP6773-8
Time
Pt
LP6960-1
- Time Core
  Pt
  LP6960-1
- Time Modifier
  NULL
System
Ser
LP7567-3
- System Core
  Ser
  LP7567-3
- Super System
  NULL
Scale
Qn
LP7753-9
Method
NULL

Basic Attributes

Class: HEM/BC
Type: Laboratory
First Released: Version 1.0e
Last Updated: Version 2.73 (MIN)
Order vs. Observation: Both
Common Test Rank Get Info: 11416

Language Variants Get Info

Tag	Language	Translation
cs-CZ	Czech (Czechia)	Komplement C1q Ag:Arbitrární koncentrace:Časový bod:Sérum:Kvantitativní:
el-GR	Greek (Greece)	Συμπλήρωμα C1q Αντιγόνο:ACnc:Pt:Ορός:Qn: Synonyms: ACnc HEM/BC Pt Qn Αντιγόνο Ορός Συμπλήρωμα C1q
es-AR	Spanish (Argentina)	antígeno del componente C1Q del complemento [Ag]:concentración arbitraria:punto en el tiempo:suero:cuantitativo:
es-ES	Spanish (Spain)	Complemento C1q Antígeno:Concentración arbitraria:Punto temporal:Suero:Qn: Synonyms: Cuantitativo
es-MX	Spanish (Mexico)	Complemento C1q Ag:Concentración arbitraria:Punto temporal:Suero:Cuantitativo:
et-EE	Estonian (Estonia)	Komplemendi komponent C1q antigeen:Acnc:Pt:S:Qn: Synonyms: Juhuslik Kvantitatiivne Seerum
fr-CA	French (Canada)	Complément C1q, Ag:Concentration arbitraire:Temps ponctuel:Sérum:Quantitatif:
fr-FR	French (France)	Complément C1q Ag:Arbitraire/Volume:Ponctuel:Sérum:Numérique:
fr-BE	French (Belgium)	Complément C1q Ag:Concentration arbitraire:Temps ponctuel:Sérum:Quantitatif: Synonyms: Antigène
it-IT	Italian (Italy)	Complemento C1q, Ag:ACnc:Pt:Siero:Qn: Synonyms: Concentrazione Arbitraria Ematologia (coagulazione) conta differenziale Punto nel tempo (episodio) Siero
ko-KR	Korean (Korea, Republic Of)	도움체 C1q 항원:임의농도:검사시점:혈청:정량:
nl-NL	Dutch (Netherlands)	complement C1q Ag:eenheid/volume:moment:serum:kwantitatief: Synonyms: antigeen
pl-PL	Polish (Poland)	Dopełniacz C1q Ag:stężenie w jednostkach umownych:punkt w czasie:surowica:ilościowy: Synonyms: Antygen składowej C1q dopełniacza Składowa C1q dopełniacza
pt-BR	Portuguese (Brazil)	Complemento C1q Ag:ACnc:Pt:Soro:Qn: Synonyms: Complement c1q binding; Complmt; Comp; Arbitrary concentration; Point in time; Random; Serum; SR; Quantitative; QNT; Quant; Quan; Antigen; Antigens; HEMATOLOGY/CELL COUNTS; HEMATOLOGY/CELL COUNTS
ru-RU	Russian (Russian Federation)	Комплемент C1q Аг:ПроизвКонц:ТчкВрм:Сыв:Колич: Synonyms: Количественный Произвольная концентрация Сыворотка Точка во времени;Момент
tr-TR	Turkish (Turkey)	Kompleman C1q Ag:SçKons:Zmlı:Ser:Kant: Synonyms: Antijen
zh-CN	Chinese (China)	补体 C1q 抗原:任意型浓度:时间点:血清:定量型: Synonyms: Ag 任意型浓度(单位体积);任意浓度;单位体积的任意单位数;人工型浓度可用数量表示的;定量性;数值型;数量型;连续数值型标尺时刻;随机;随意;瞬间血液学/细胞计数;血液学与细胞计数补体 C1q Ag

Example Units

Unit	Source
units	eCHN
[arb'U]/mL	Example UCUM Units

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

CodeSystem lookup: https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=6297-6

LOINC Copyright

Copyright © Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.