73978-9

von Willebrand factor (vWf).activity [Units/volume] in Platelet poor plasma by Immunoassay

Active

Term Description

Von Willebrand Factor Activity (VWF Activity, vWF:Act) in plasma specimens can be quantitatively determined by immunological methods. This code is created for, but not limited in use to, the submitter's kit, HemosIL Von Willebrand Factor Activity Kit, which determines VWF activity by measuring the increase of turbidity produced by the agglutination of the latex reagent. This assay uses a specific anti-VWF monoclonal antibody directed against the platelet binding site of VWF, glycoprotein Ib receptor, and reacts with the VWF in patient plasma. The degree of agglutination is directly proportional to the activity of VWF in the sample and is determined by measuring the decrease of transmitted light caused by the aggregates. The submitter's lab reports the results in U/mL where U represents "units" rather than the standard meaning of U, which is mmol/Min, a measure of enzyme rates. Additional testing (e.g. ristocetin cofactor assay) may be needed to confirm a diagnosis of von Willebrand disease (VWD).

LOINC Names Get Info

Fully-Specified Name: von Willebrand factor.activity:ACnc:Pt:PPP:Qn:IA
Long Common Name: von Willebrand factor (vWf).activity [Units/volume] in Platelet poor plasma by Immunoassay
Short Name: vWf:Ac PPP IA-aCnc
Display Name: vWf.activity IA Qn (PPP)
Consumer Name Alpha Get Info: vWf.activity, Blood

Part Model Get Info

Component
von Willebrand factor.activity
LP135005-9
- Analyte
  von Willebrand factor.activity
  LP135005-9
  - Component Numerator
    von Willebrand factor.activity
    LP135005-9
    - Component Numerator Core
      von Willebrand factor.activity
      LP135005-9
    - Component Numerator Core Suffix
      NULL
  - 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
PPP
LP7494-0
- System Core
  PPP
  LP7494-0
- Super System
  NULL
Scale
Qn
LP7753-9
Method
IA
LP217197-5

Basic Attributes

Class: COAG
Type: Laboratory
First Released: Version 2.44
Last Updated: Version 2.73 (MIN)
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: 8787

Language Variants Get Info

Tag	Language	Translation
cs-CZ	Czech (Czechia)	von Willebrandův faktor (vWf).aktivita:Arbitrární koncentrace:Časový bod:Plazma chudá na trombocyty:Kvantitativní:Imunoanalýza
de-DE	German (Germany)	von Willebrand-Faktor.Aktivität:Arbiträre Konzentration:Zeitpunkt:Thrombozytenarmes Plasma:Quantitativ:Immunoassay
el-GR	Greek (Greece)	παράγοντας Von Willebrand.δραστηριότητα:ACnc:Pt:PPP:Qn:IA Synonyms: ACnc COAG IA PPP Pt Qn Δραστηριότητα παράγοντας Von Willebrand παράγοντας Von Willebrand.δραστηριότητα
es-ES	Spanish (Spain)	Factor von Willebrand .actividad:Concentración arbitraria:Punto temporal:Plasma pobre en plaquetas:Qn:IA Synonyms: Cuantitativo
es-MX	Spanish (Mexico)	Factor de von Willebrand.:Concentración arbitraria:Punto temporal:Plasma pobre en plaquetas:Cuantitativo:Inmunoensayo
fr-CA	French (Canada)	Facteur von Willebrand.activité:Concentration arbitraire:Temps ponctuel:Plasma pauvre en plaquettes:Quantitatif:IA
fr-FR	French (France)	Facteur Willebrand activité:Arbitraire/Volume:Ponctuel:Plasma pauvre en plaquettes:Numérique:Immunoanalyse
it-IT	Italian (Italy)	Fattore di von Willebrand.attività:ACnc:Pt:PPP:Qn:IA Synonyms: Concentrazione Arbitraria Fattore di von Willebrand (vWf) Fattore di von Willebrand (vWf).attività Immunoassay Plasma povero di piastrine Punto nel tempo (episodio) Studio di coagulazione
nl-NL	Dutch (Netherlands)	von Willebrand-factor.activiteit:eenheid/volume:moment:plaatjesarm plasma:kwantitatief:immunoassay Synonyms: coagulatiemethode IA
pl-PL	Polish (Poland)	von Willebrand czynnik.aktywność:stężenie w jednostkach umownych:punkt w czasie:osocze ubogopłytkowe:ilościowy:metoda immunologiczna Synonyms: Aktywność czynnika von Willebranda;Aktywność vWF Czynnik von Willebranda (vWf) PPP
ru-RU	Russian (Russian Federation)	von Willebrand фактор.активность: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.aktivite:SçKons:Zmlı:TFkP:Kant:İA Synonyms: İmmünölçüm, immünoassay
zh-CN	Chinese (China)	von Willebrand 因子.活性:任意型浓度:时间点:贫血小板血浆:定量型:免疫测定法 Synonyms: 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）.活性;von Willebrand 因子（von Willebrand Factor，vWf）活性;vWf 活性;vWf 因子活性;血管性假血友病因子.活性;血管性血友病因子.活性乏血小板血浆;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;瞬间活动系数

Example Units

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

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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.