Key features and details
- Sensitivity: 2.5 mU/ml
- Range: 2.5 mU/ml - 80 mU/ml
- Sample type: Cell culture supernatant, Plasma, Serum
- Detection method: Colorimetric
- Assay type: Sandwich (quantitative)
- Reacts with: Human
Product nameHuman Von Willebrand Factor ELISA Kit (with plasma controls)
See all Von Willebrand Factor kits
Intra-assay Sample n Mean SD CV% Overall 5% Inter-assay Sample n Mean SD CV% Overall 7.1%
Sample typeCell culture supernatant, Serum, Plasma
Assay typeSandwich (quantitative)
Sensitivity> 2.5 mU/ml
Range2.5 mU/ml - 80 mU/ml
Assay time5h 00m
Species reactivityReacts with: Human
Abcam’s Von Willebrand Factor (VWF) Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of Von Willebrand Factor levels in cell culture supernatants, plasma and serum.
A Von Willebrand Factor specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently a Von Willebrand Factor specific biotinylated detection antibody is added and then followed by washing with wash buffer. Streptavidin-Peroxidase Conjugate is added and unbound conjugates are washed away with wash buffer. TMB is then used to visualize Streptavidin-Peroxidase enzymatic reaction. TMB is catalyzed by Streptavidin-Peroxidase to produce a blue color product that changes into yellow after adding acidic stop solution. The density of yellow coloration is directly proportional to the amount of Von Willebrand Factor captured in plate.
Get higher sensitivity in only 90 minutes with Human Von Willebrand Factor ELISA Kit (ab189571) from our SimpleStep ELISA® range.
The entire kit may be stored at -20°C for long term storage before reconstitution - Avoid repeated freeze-thaw cycles.
Storage instructionsStore at -20°C. Please refer to protocols.
Components 1 x 96 tests 100X Streptavidin-Peroxidase Conjugate 1 x 80µl 10X Diluent N Concentrate 1 x 30ml 20X Wash Buffer Concentrate 2 x 30ml 100X Biotinylated Human Von Williebrand Factor Antibody 1 x 60µl Chromogen Substrate 1 x 7ml Positive control (Reference Plasma Control) 1 vial Sealing Tapes 3 units Stop Solution 1 x 11ml Von Williebrand Factor Microplate (12 x 8 well strips) 1 x 96 tests Von Williebrand Factor Standard 1 vial
FunctionImportant in the maintenance of hemostasis, it promotes adhesion of platelets to the sites of vascular injury by forming a molecular bridge between sub-endothelial collagen matrix and platelet-surface receptor complex GPIb-IX-V. Also acts as a chaperone for coagulation factor VIII, delivering it to the site of injury, stabilizing its heterodimeric structure and protecting it from premature clearance from plasma.
Involvement in diseaseDefects in VWF are the cause of von Willebrand disease (VWD) [MIM:277480]. VWD defines a group of hemorrhagic disorders in which the von Willebrand factor is either quantitatively or qualitatively abnormal resulting in altered platelet function. Symptoms vary depending on severity and disease type but may include prolonged bleeding time, deficiency of factor VIII and impaired platelet adhesion. Type I von Willebrand disease is the most common form and is characterized by partial quantitative plasmatic deficiency of an otherwise structurally and functionally normal Willebrand factor; type II is associated with a qualitative deficiency and functional anomalies of the Willebrand factor; type III is the most severe form and is characterized by total or near-total absence of Willebrand factor in the plasma and cellular compartments, also leading to a profound deficiency of plasmatic factor VIII.
Sequence similaritiesContains 1 CTCK (C-terminal cystine knot-like) domain.
Contains 4 TIL (trypsin inhibitory-like) domains.
Contains 3 VWFA domains.
Contains 3 VWFC domains.
Contains 4 VWFD domains.
DomainThe von Willebrand antigen 2 is required for multimerization of vWF and for its targeting to storage granules.
modificationsAll cysteine residues are involved in intrachain or interchain disulfide bonds.
N- and O-glycosylated.
Cellular localizationSecreted. Secreted > extracellular space > extracellular matrix. Localized to storage granules.
- Information by UniProt
- Coagulation factor VIII
- Coagulation factor VIII VWF
ab168548 has not yet been referenced specifically in any publications.