Version 2.78

Term Description

This term represents a ratio of two results that are expressed as percentages of normal: the von Willebrand factor.collagen binding activity and the von Willebrand factor antigen concentration, both of which are reported as actual/Normal. The von Willebrand factor (vWF) collagen binding activity to antigen ratio can help distinguish different types of von Willebrand disease (VWD). VWD types 1 and 3 are usually associated with a quantitative decrease in vWF, which would affect both the vWF collagen binding activity as well as vWF antigen concentration, while type 2 is associated with a functional defect in VWF, which would affect the activity but not the amount of antigen present. Therefore, patients with type 2 VWD are likely to have a lower vWF collagen binding activity to antigen ratio (less than 0.5) compared to patients with types 1 or 3 VWD.
Source: Regenstrief LOINC

Part Description

LP65368-0   von Willebrand factor.collagen binding activity
von Willebrand collagen binding assay is used to distinguish the subtype (1, 2 or 3) of von Willebrand disorders, not to establish the presence of the disorder. Source: Regenstrief Help

Fully-Specified Name

Component
von Willebrand factor.collagen binding activity/von Willebrand factor Ag
Property
Ratio
Time
Pt
System
PPP
Scale
Qn
Method
IA

Additional Names

Short Name
vWF CBA/vWF Ag PPP IA-Rto
Display Name
vWf.collagen binding activity/vWf Ag IA (PPP) [Ratio]
Consumer Name Alpha Get Info
vWf Collagen Binding Activity/Antigen, Blood

Basic Attributes

Class
COAG
Type
Laboratory
First Released
Version 2.22
Last Updated
Version 2.73
Change Reason
The EIA method, which was always intended to cover more than just enzyme-linked immunoassay and whose display name for the long common name has always been Immunoassay, was renamed IA in order to eliminate ambiguity about whether the method has a broader meaning than just enzyme-linked immunoassay. Likewise, EIA.rapid was renamed IA.rapid. These changes were approved by the Laboratory LOINC Committee in June 2016.
Order vs. Observation
Observation
Common Test Rank Get Info
7393

Formula (Readable)

(vWF collagen binding activity actual/Normal)/(vWF Ag actual/Normal)

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: von Willebrand Faktor Ratio
de-DE German (Germany) von Willebrand Faktor.Kollagen-Bindungsaktivität/von Willebrand-Faktor-Antigen:Verhältnis:Zeitpunkt:Thrombozytenarmes Plasma:Quantitativ:Immunoassay
es-ES Spanish (Spain) Factor von Willebrand.ensayo de unión al colágeno/factos von Willebrand Antígeno:Fracción:Punto temporal:Plasma pobre en plaquetas:Qn:IA
Synonyms: Cuantitativo vWF:Ag
es-MX Spanish (Mexico) factor de von Willebrand, actividad de unión al colágeno / factor Ag de von Willebrand:Proporción:Punto temporal:Plasma pobre en plaquetas:Cuantitativo:Inmunoensayo
fr-CA French (Canada) Facteur von Willebrand.activité de liaison au collagène/Facteur von Willebrand, Ag:Ratios:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
fr-FR French (France) Facteur Willebrand activité de liaison au collagène/facteur Willebrand antigène:Ratio:Ponctuel:Plasma pauvre en plaquettes:Numérique:Immunoanalyse
it-IT Italian (Italy) von Willebrand, fattore.attività collagene legante/fattore di von Willebrand, Ag:Rapporto:Pt:PPP:Qn:IA
Synonyms: Ag fattore di von Willebrand Attività collagene legante del fattore di von Will Fattore di von Willebrand (vWf) Immunoassay Plasma povero di piastrine Punto nel tempo (episodio) Studio di coagulazione
nl-NL Dutch (Netherlands) von Willebrand-factor.collageen bindingsactiviteit/von Willebrand-factor Ag:verhouding:moment:plaatjesarm plasma:kwantitatief:immunoassay
Synonyms: coagulatiemethode IA
pt-BR Portuguese (Brazil) Fator de von Willebrand.atividade ligadora de colágeno/Fator von Willebrand Ag:Ratio:Pt:PPPQ:Qn:Imunoensaio
Synonyms: ; vWF CBA; vWF:CBA; vWF:Ag; vWf; Movements; Rto; Point in time; Random; Platelet poor plasma; Plas; Quantitative; QNT; Quant; Quan; Enzyme immunoassay; ELISA; MEIA; SUDS; ELFA; IAA; Antigen; Antigens; Vonwillebrand; Von will; Fac; Fact; Bind; Actvty; Activ; COAGULATION
ru-RU Russian (Russian Federation) von Willebrand фактор.коллаген связывающая активность/von Willebrand фактор Аг:Отношение:ТчкВрм:ОПП:Колич:IA
Synonyms: Количественный Коэффициент;Соотношение;Пропорция Обеднённая пластинками плазма;Бедная тромбоцитами плазма Точка во времени;Момент
tr-TR Turkish (Turkey) von Willebrand faktörü.kollajen bağlayıcı aaktivite/von Willebrand faktörü Ag:Oran:Zmlı:TFkP:Kant:İA
Synonyms: İmmünölçüm, immünoassay
zh-CN Chinese (China) von Willebrand 因子.胶原结合活性/von Willebrand 因子 抗原:比率:时间点:贫血小板血浆:定量型:免疫测定法
Synonyms: 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 von Willebrand 因子（vWf 因子、血管性假血友病因子、血管性血友病因子）.胶原结合活性;von Willebrand 因子.胶原蛋白结合活性;Von willebrand 因子胶原结合活性;Von willebrand 因子胶原蛋白结合活性;vWf 因子.胶原结合活性;vWf 因子.胶原蛋白结合活性;vWf 胶原结合活性;vWf 胶原蛋白结合活性;vWF:CBA;血管性血友病因子.胶原结合活性 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 时刻;随机;随意;瞬间 来自于不同体系的两个观察指标之比;比;比值 活动 系数 结合性 结合性的 胶原蛋白;胶原质;骨胶原 血管性血友病因子 Ag 血管性血友病因子抗原

Example Units

Unit Source
{ratio} 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=50378-9