Key features and details
- Sensitivity: 0.38 mIU/ml
- Range: 0.625 mIU/ml - 40 mIU/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 (VWF)
See all Von Willebrand Factor kits
Intra-assay Sample n Mean SD CV% Overall 5.6% Inter-assay Sample n Mean SD CV% Overall 9.6%
Sample typeCell culture supernatant, Serum, Plasma
Assay typeSandwich (quantitative)
Sensitivity= 0.38 mIU/ml
Range0.625 mIU/ml - 40 mIU/ml
Assay time5h 00m
Assay durationMultiple steps standard assay
Species reactivityReacts with: Human
Human Von Willebrand Factor (VWF) in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of Human Von Willebrand Factor in plasma, serum, and cell culture supernatants.
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 50X Biotinylated Human Von Williebrand Factor Antibody 1 x 120µl Chromogen Substrate 1 x 7ml Sealing Tapes 3 units Stop Solution 1 x 11ml Von Williebrand Factor Microplate (12 x 8 well strips) 1 unit 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
ab108918 has been referenced in 15 publications.
- Gifford FJ et al. The Eye as a Non-Invasive Window to the Microcirculation in Liver Cirrhosis: A Prospective Pilot Study. J Clin Med 9:N/A (2020). PubMed: 33080821
- Wei W et al. Difference in inflammation, atherosclerosis, and platelet activation between coronary artery aneurysm and coronary artery ectasia. J Thorac Dis 12:5811-5821 (2020). PubMed: 33209413
- Aryal B et al. Bivalent property of intra-platelet VWF in liver regeneration and HCC recurrence: A prospective multicenter study. Cancer Biomark 26:51-61 (2019). PubMed: 31322547
- Hartman CL et al. 2-Chlorofatty acids induce Weibel-Palade body mobilization. J Lipid Res 59:113-122 (2018). PubMed: 29167411
- Liang Y et al. Coagulation cascade and complement system in systemic lupus erythematosus. Oncotarget 9:14862-14881 (2018). PubMed: 29599912