Version 2.78

Part Description

LP16906-7   von Willebrand factor
Von Willebrand factor (vWF) is a high-molecular-weight plasma protein produced by endothelial cells and megakaryocytes. It is part of the factor VIII/vWF complex. The vWF has receptors for collagen, platelets, and ristocetin. Ristocetin is an antibiotic, previously used to treat staphylococcal infections, now mainly used in vitro to diagnose conditions such as von Willebrand disease. Platelet agglutination caused by ristocetin can occur only in the presence of von Willebrand factor multimers, so if ristocetin is added to blood lacking the factor it will not coagulate. The vWF facilitates the adhesion of platelets to collagen and hemostatic plug formation. The prolonged bleeding time in von Willebrand's disease is due to the deficiency of this factor. Source: National Library of Medicine, MeSH 2006

Reference Information

Type Source Reference
Mapping Guidance Regenstrief Help Measures the amount of vWF protein, reported as a concentration. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Fully-Specified Name

Component
von Willebrand factor Ag
Property
ACnc
Time
Pt
System
PPP
Scale
Qn
Method
IA

Additional Names

Long Common Name
von Willebrand factor (vWf) Ag [Units/volume] in Platelet poor plasma by Immunoassay
Short Name
vWF Ag PPP IA-aCnc
Display Name
vWf Ag IA Qn (PPP)
Consumer Name Alpha Get Info
vWf antigen, Blood

Basic Attributes

Class
COAG
Type
Laboratory
First Released
Version 1.0d
Last Updated
Version 2.73
Change Reason
Renamed Method from "Imm" to "IA" for consistency across classes (approved by Laboratory LOINC Committee 2016 12).
Order vs. Observation
Both
Common Test Rank Get Info
2386

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) von Willebrand-Faktor Ag:Arbiträre Konzentration:Zeitpunkt:Thrombozytenarmes Plasma:Quantitativ:Immunoassay
es-AR Spanish (Argentina) [antígeno de] factor de von Willebrand [Ag]:concentración arbitraria:punto en el tiempo:plasma desplaquetado:cuantitativo:inmune
es-ES Spanish (Spain) Factor de Von Willebrand Antígeno:Concentración arbitraria:Punto temporal:Plasma pobre en plaquetas:Qn:IA
Synonyms: Cuantitativo vWF:Ag
es-MX Spanish (Mexico) factor Ag de von Willebrand:Concentración arbitraria:Punto temporal:Plasma pobre en plaquetas:Cuantitativo:Inmunoensayo
et-EE Estonian (Estonia) Von Willebrand faktor antigeen:Acnc:Pt:PPP:Qn:IA
Synonyms: Juhuslik Kvantitatiivne Trombotsüütidevaene plasma
fr-CA French (Canada) Facteur von Willebrand, Ag:Concentration arbitraire:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
fr-FR French (France) Facteur Willebrand antigène:Arbitraire/Volume:Ponctuel:Plasma pauvre en plaquettes:Numérique:Immunoanalyse
fr-BE French (Belgium) Facteur von Willebrand Ag:Concentration arbitraire:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
Synonyms: Antigène Fvw
it-IT Italian (Italy) von Willebrand, fattore, Ag:ACnc:Pt:PPP:Qn:IA
Synonyms: Concentrazione Arbitraria Fattore di von Willebrand (vWf) Immunoassay Plasma povero di piastrine Punto nel tempo (episodio) Studio di coagulazione
ko-KR Korean (Korea, Republic Of) 폰 빌레브란트 인자 항원:임의농도:검사시점:혈소판제거혈장:정량:효소법
nl-NL Dutch (Netherlands) von Willebrand-factor Ag:eenheid/volume:moment:plaatjesarm plasma:kwantitatief:immunoassay
Synonyms: antigeen coagulatiemethode IA
pl-PL Polish (Poland) Czynnik von Willebranda Ag:stężenie w jednostkach umownych:punkt w czasie:osocze ubogopłytkowe:ilościowy:metoda immunologiczna
Synonyms: Antygen czynnika von Willebranda (vWf) Czynnik von Willebranda (vWf) PPP
pt-BR Portuguese (Brazil) Fator de von Willebrand Ag:ACnc:Pt:PPPQ:Qn:Imunológico
Synonyms: ; vWF:Ag; vWf; Arbitrary concentration; Point in time; Random; Platelet poor plasma; Plas; Quantitative; QNT; Quant; Quan; Immunology; Immunol; Antigen; Antigens; Vonwillebrand; Von will; Fac; Fact; COAGULATION
ru-RU Russian (Russian Federation) von Willebrand фактор (vWf) Аг:ПроизвКонц:ТчкВрм:ОПП:Колич:IA
Synonyms: Количественный Обеднённая пластинками плазма;Бедная тромбоцитами плазма Произвольная концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) von Willebrand faktörü Ag:SçKons:Zmlı:TFkP:Kant:İA
Synonyms: Antijen İmmünölçüm, immünoassay
zh-CN Chinese (China) von Willebrand 因子 抗原:任意型浓度:时间点:贫血小板血浆:定量型:免疫测定法
Synonyms: Ag von Willebrand 因子 Ag von Willebrand von Willebrand 因子（von Willebrand Factor，vWf）;vWf;vWf 因子;血管性假血友病因子;血管性血友病因子 vWf 因子 Ag vWf 因子抗原 乏血小板血浆;Platelet poor plasma;PPP 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 免疫测定;免疫分析法;免疫检定法;免疫检定;免疫试验;酶免疫测定法;酶免疫测定;酶免疫分析法;酶免疫检定法;酶免疫检定;酶免疫试验 冯·威勒布兰德 冯威勒布兰德 冯威勒布兰德氏 凝血功能;凝血功能试验;凝血过程;血液凝固;血液凝固功能;血液凝固过程 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 因素 时刻;随机;随意;瞬间 系数 血管性血友病因子 Ag 血管性血友病因子抗原

Example Units

Unit Source
U/mL eCHN
[IU]/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=6012-9