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 % of normal. Mapper’s Guide for the Top 2000 plus LOINC Laboratory Observations

Fully-Specified Name

Component
von Willebrand factor Ag actual/Normal
Property
RelMCnc
Time
Pt
System
PPP
Scale
Qn
Method
IA

Additional Names

Short Name
vWF Ag Act/Nor PPP IA
Display Name
vWf Ag actual/normal IA (PPP) [Relative mass conc]
Consumer Name Alpha Get Info
vWf antigen activity, Blood

Basic Attributes

Class
COAG
Type
Laboratory
First Released
Version 2.00
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
1828

Member of these Panels

LOINC Long Common Name
98125-8 Intravascular coagulation and fibrinolysis panel
44791-2 Menorrhagia coagulation panel - Platelet poor plasma
48593-8 von Willebrand panel - Platelet poor plasma

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: vWillebrand Fakt.AG
de-DE German (Germany) von Willebrand-Faktor Ag aktuell/normal:Relative Massenkonzentration:Zeitpunkt:Thrombozytenarmes Plasma:Quantitativ:Immunoassay
es-AR Spanish (Argentina) [antígeno de] factor de von Willebrand [Ag]:concentración másica relativa:punto en el tiempo:plasma desplaquetado:cuantitativo:inmune
es-ES Spanish (Spain) Factor de Von Willebrand Ag presente/normal:Concentración Relativa de masa:Punto temporal:Plasma pobre en plaquetas:Qn:IA
Synonyms: Cuantitativo vWF:Ag
es-MX Spanish (Mexico) Factor Ag de von Willebrand real / Normal:Concentración de masa relativa:Punto temporal:Plasma pobre en plaquetas:Cuantitativo:Inmunoensayo
fr-CA French (Canada) Facteur von Willebrand, Ag, Mesuré/normal:Concentration de masse relative:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
fr-FR French (France) Facteur Willebrand antigène Patient (%):Concentration massique relative:Ponctuel:Plasma pauvre en plaquettes:Numérique:Immunoanalyse
fr-BE French (Belgium) Facteur von Willebrand Ag. Mesuré/normal:Concentration de masse relative:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
Synonyms: Antigène Fvw Mesuré/normal
it-IT Italian (Italy) von Willebrand, fattore Ag effettivo/normale:RelMCnc:Pt:PPP:Qn:IA
Synonyms: Concentrazione di Massa Relativa 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 실제값/정상범위:상대질량농도:검사시점:혈소판제거혈장:정량:효소법
nl-NL Dutch (Netherlands) von Willebrand-factor Ag gemeten/normaal:relatieve massa/normaal:moment:plaatjesarm plasma:kwantitatief:immunoassay
Synonyms: antigeen coagulatiemethode gemeten/normaal IA
pl-PL Polish (Poland) Czynnik von Willebranda Ag badane/prawidłowe:stężenie masowe względne:punkt w czasie:osocze ubogopłytkowe:ilościowy:metoda immunologiczna
Synonyms: Antygen czynnika von Willebranda (vWf) Antygen czynnika von Willebranda (vWf) oznaczony/prawidłowy Czynnik von Willebranda (vWf) PPP
pt-BR Portuguese (Brazil) Fator von Willebrand Ag verdadeiro/Normal:RelMCnc:Pt:PPPQ:Qn:Imunológico
Synonyms: ; vWF:Ag; vWf; Nor; Relative mass concentration; RLMCNC; Point in time; Random; Platelet poor plasma; Plas; Quantitative; QNT; Quant; Quan; Immunology; Immunol; Ag Act/Nor; Antigen; Antigens; Act/Nor; Vonwillebrand; Von will; Control; Fac; Fact; COAGULATION
ru-RU Russian (Russian Federation) von Willebrand фактор (vWf) Аг актуальный/нормальный:ОтнМассКонц:ТчкВрм:ОПП:Колич:IA
Synonyms: Количественный Обеднённая пластинками плазма;Бедная тромбоцитами плазма Относительная массовая концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) von Willebrand faktörü Ag gerçek/normal:GörKütleKons:Zmlı:TFkP:Kant:İA
Synonyms: Antijen İmmünölçüm, immünoassay
zh-CN Chinese (China) von Willebrand 因子 抗原 实际的/正常的:相对质量浓度: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 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 实测值 实测值/正常值;实际/正常;实际值/正常值;实际测定值/正常值 实测的 实际值 对照 对照标准 对照物 对照的 抗原实测值/正常值;抗原 实际/正常;抗原实际值/正常值;抗原实际测定值/正常值 时刻;随机;随意;瞬间 正常的 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
% Example UCUM Units
% REGENSTRIEF

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=27816-8