Dec 22, 2018 · Von Willebrand factor (vWF) is one of several proteins in the body's blood clotting system that work together, and in sequence, to stop bleeding. Von Willebrand factor tests help …

Aggregation of the latex particles caused by vWF from the sample is measured photo-optically. Turnaround time is defined as the usual number of days from the date of pickup of a specimen …

The current paper describes protocols for assessment of VWF level by means of VWF antigen (VWF:Ag). These assays identify VWF levels by quantitative assessment of VWF protein by …

The VWF antigen level (VWF:Ag) is typically conducted using an enzyme-linked immunosorbent assay (ELISA)–based immunoassay method, allowing for the quantification of VWF present in …

Sep 27, 2022 · Immunological assays of von Willebrand factor [VWF:Ag] are assays that measure the concentration of the VWF protein in plasma. They give no indication as to VWF function. A …

Dec 30, 2021 · VWF:Ag and platelet-dependent activity are continuous variables that are associated with an increase in bleeding risk with decreasing levels. This systematic review …

Von Willebrand factor is involved in a few stages of blood clotting. Proteins called clotting factors are needed for blood to clot properly and help prevent too much bleeding. A von Willebrand …

Von Willebrand factor (VWF) (German: [fɔn ˈvɪləbʁant]) is a blood glycoprotein that promotes primary hemostasis, specifically, platelet adhesion.

The VWF Ag assay is an immunoturbidimetric assay for the quantitative, WHO-standardized determination of von Willebrand factor (VWF) antigen concentration. Designed as an aid used …

Oct 3, 2006 · Von Willebrand Factor (VWF) antigen is an immuno-turbidimetric assay based on the agglutination of latex microparticles coated with antibodies specific for VWF added to the …