| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | Flt1; Fms-Related Tyrosine Kinase 1; Vascular Permeability Factor Receptor |
| Product Type | |
| Sensitivity |
Scientific Background
FLT4, is a tyrosine kinase receptor for vascular endothelial growth factors C and D. The protein is thought to be involved in lymphangiogenesis and maintenance of the lymphatic endothelium. Mutations in this gene cause hereditary lymphedema type IA.The FLT4 mRNA signals first became detectable in the angioblasts of head mesenchyme, the cardinal vein, and extraembryonally in the allantois of 8.5-day p.c. postcoitus embryos. In 12.5-day p.c. embryos, the FLT4 signal decorated developing venous and presumptive lymphatic endothelia, but arterial endothelia were negative. FLT4 mRNA became restricte.
Assay Principle
This assay employs a two-site sandwich ELISA to quantitate VEGFR-1 in samples. An antibody specific for VEGFR-1 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyVEGFR-1 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for VEGFR-1 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of VEGFR-1 bound in the initial step. The color development is stopped and the intensity of the color is measured.
Performance Specifications
| Sensitivity | 29 pg/mL |
|---|---|
| Detection Range | 78.1-5000 pg/mL |
| Total Assay Time | 3.5–5 hours |
| Compatible Sample Types | serum, plasma, cell culture supernatant, tissue homogenate |
| Species Reactivity | Human |
| Detection Method | Colorimetric (TMB/HRP) |
| Storage | 4°C (short-term); -20°C (long-term) |
✓ Research-Grade Validation
Safety & Regulatory
Handle reagents in accordance with institutional biosafety guidelines. Refer to the Safety Data Sheet (SDS) for complete hazard and handling information. Contains components that may require special disposal procedures per local regulations.
This kit is validated for use with serum, plasma, cell culture supernatant, tissue homogenate. For unlisted matrices (e.g., tissue lysate, urine), perform a spike-and-recovery experiment to confirm assay performance before generating reportable data. Sample dilution in the kit's provided diluent is recommended to minimize matrix interference.
The minimum detectable concentration (sensitivity) of this kit is 29 pg/mL. Values below this threshold should be reported as below the limit of detection (<LOD) and should not be extrapolated from the standard curve.
The total assay time from sample addition to absorbance reading is approximately 3.5–5 hours, including all incubation, wash, and substrate steps. Hands-on time is typically 1–2 hours; most steps involve passive plate incubation. Plan the assay as a single uninterrupted session for best results.
Standard components of this Sandwich ELISA Kit typically include: pre-coated microplate (96-well strip format), lyophilized or liquid recombinant VEGFR-1 standard, detection antibody, streptavidin-HRP conjugate, TMB substrate, stop solution, wash buffer concentrate, and sample/standard diluent. Refer to the kit insert or datasheet for the exact component list and storage requirements.
This kit uses colorimetric (TMB/HRP) detection and requires a standard microplate absorbance reader capable of measuring at 450 nm. A reference wavelength of 570 nm or 630 nm is recommended to reduce background. No specialized fluorescence or luminescence reader is needed. Ensure the instrument is calibrated and the plate is clean and free of condensation before reading.
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