Key features and details
- Sensitivity: 1.2 ng/ml
- Range: 1.25 ng/ml - 80 ng/ml
- Sample type: Cell culture supernatant, Milk, Plasma, Saliva, Serum
- Detection method: Colorimetric
- Assay type: Sandwich (quantitative)
- Reacts with: Human
Product nameHuman Prekallikrein and Kallikrein ELISA Kit
Intra-assay Sample n Mean SD CV% Overall = 4.3% Inter-assay Sample n Mean SD CV% Overall = 8.9%
Sample typeCell culture supernatant, Saliva, Milk, Serum, Plasma
Assay typeSandwich (quantitative)
Sensitivity> 1.2 ng/ml
Range1.25 ng/ml - 80 ng/ml
= 98 %
Assay time4h 00m
Species reactivityReacts with: Human
Abcam’s Prekallikrein and Kallikrein Human in vitro ELISA (Enzyme-Linked Immunosorbent Assay) kit is designed for the quantitative measurement of Prekallikrein and Kallikrein levels in plasma, serum, saliva, milk, cerebrospinal fluid and cell culture supernatants.
A Prekallikrein specific antibody has been precoated onto 96-well plates and blocked. Standards or test samples are added to the wells and subsequently a Prekallikrein 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 Prekallikrein and Kallikrein captured in plate.
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 60X Biotinylated Human Prekallikrein Antibody 1 x 120µl Chromogen Substrate 1 x 7ml Prekallikrein Microplate (12 x 8 well strips) 1 unit Prekallikrein Standard 1 vial Sealing Tapes 3 units Stop Solution 1 x 11ml
FunctionThe enzyme cleaves Lys-Arg and Arg-Ser bonds. It activates, in a reciprocal reaction, factor XII after its binding to a negatively charged surface. It also releases bradykinin from HMW kininogen and may also play a role in the renin-angiotensin system by converting prorenin into renin.
Involvement in diseaseDefects in KLKB1 are the cause of prekallikrein deficiency (PKK deficiency) [MIM:612423]; also known as Fletcher factor deficiency. This disorder is a blood coagulation defect.
Sequence similaritiesBelongs to the peptidase S1 family. Plasma kallikrein subfamily.
Contains 4 apple domains.
Contains 1 peptidase S1 domain.
- Information by UniProt
- Fletcher factor
ab171015 has been referenced in 2 publications.
- Scheffel J et al. Cold-induced urticarial autoinflammatory syndrome related to factor XII activation. Nat Commun 11:179 (2020). PubMed: 31924766
- Harbaum L et al. Reduced plasma levels of small HDL particles transporting fibrinolytic proteins in pulmonary arterial hypertension. Thorax 74:380-389 (2019). PubMed: 30478197