Key features and details
- Sensitivity: 0.58 ng/ml
- Sample type: Cell culture supernatant, Milk, Plasma, Serum
- Detection method: Colorimetric
- Assay type: Sandwich (quantitative)
- Reacts with: Human
Product nameHuman Factor IX ELISA Kit
See all Factor IX/PTC kits
Intra-assay Sample n Mean SD CV% Overall 5.2% Inter-assay Sample n Mean SD CV% Overall 9.9%
Sample typeCell culture supernatant, Milk, Serum, Plasma
Assay typeSandwich (quantitative)
Sensitivity= 0.58 ng/ml
Range0.313 mIU/ml - 20 mIU/ml
Assay time4h 00m
Assay durationMultiple steps standard assay
Species reactivityReacts with: Human
Factor IX Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of Factor IX concentrations in cell culture supernatants, serum and plasma.
A Factor IX specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently a Factor IX 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 Factor IX captured in plate.
Get higher sensitivity in only 90 minutes with Human Factor IX ELISA Kit (ab188393) 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 M Concentrate 1 x 30ml 20X Wash Buffer Concentrate 2 x 30ml 70X Biotinylated Human Factor IX Antibody 1 x 90µl Chromogen Substrate 1 x 7ml Factor IX Microplate (12 x 8 well strips) 1 unit Factor IX Standard 1 vial Sealing Tapes 3 units Stop Solution 1 x 11ml
FunctionFactor IX is a vitamin K-dependent plasma protein that participates in the intrinsic pathway of blood coagulation by converting factor X to its active form in the presence of Ca(2+) ions, phospholipids, and factor VIIIa.
Tissue specificitySynthesized primarily in the liver and secreted in plasma.
Involvement in diseaseDefects in F9 are the cause of recessive X-linked hemophilia B (HEMB) [MIM:306900]; also known as Christmas disease.
Note=Mutations in position 43 (Oxford-3, San Dimas) and 46 (Cambridge) prevents cleavage of the propeptide, mutation in position 93 (Alabama) probably fails to bind to cell membranes, mutation in position 191 (Chapel-Hill) or in position 226 (Nagoya OR Hilo) prevent cleavage of the activation peptide.
Defects in F9 are the cause of thrombophilia due to factor IX defect (THR-FIX) [MIM:300807]. A hemostatic disorder characterized by a tendency to thrombosis.
Sequence similaritiesBelongs to the peptidase S1 family.
Contains 2 EGF-like domains.
Contains 1 Gla (gamma-carboxy-glutamate) domain.
Contains 1 peptidase S1 domain.
DomainCalcium binds to the gamma-carboxyglutamic acid (Gla) residues and, with stronger affinity, to another site, beyond the Gla domain.
modificationsActivated by factor XIa, which excises the activation peptide.
The iron and 2-oxoglutarate dependent 3-hydroxylation of aspartate and asparagine is (R) stereospecific within EGF domains.
- Information by UniProt
- Christmas Disease
- Christmas factor
- Coagulant factor IX
SimpleStep ELISA kits
ab108831 has been referenced in 2 publications.
- Cohen CT et al. Production and control of coagulation proteins for factor X activation in human endothelial cells and fibroblasts. Sci Rep 10:2005 (2020). PubMed: 32029851
- Liang Y et al. Coagulation cascade and complement system in systemic lupus erythematosus. Oncotarget 9:14862-14881 (2018). PubMed: 29599912