Human C-Type Natriuretic Peptide (CNP) ELISA Kit

Principle of the Assay

The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human CNP. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human CNP. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human CNP, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human CNP in the samples is then determined by comparing the OD of the samples to the standard curve.

For use with: Serum, plasma, and other biological fluids.

For Research Use Only. Not for use in diagnostic procedures.

Target Information

CNP-22Hormone which plays a role in endochondral ossification through regulation of cartilaginous growth plate chondrocytes proliferation and differentiation (By similarity). May also be vasoactive and natriuretic (PubMed:1672777). Acts by specifically binding and stimulating NPR2 to produce cGMP (PubMed:1672777, PubMed:21098034). Binds the clearance receptor NPR3 (PubMed:11533490).

GENE ID	4880
SWISS PROT	P23582
SYNONYMS	ANFC; C type natriuretic peptide precursor; CNP-53; CNP2; Natriuretic peptide C; Natriuretic peptide precursor C; NPPC

Materials Supplied

Kit Components	96 Wells Quantity/Size
Pre-Coated Microplate	48T: 6 strips x 8 wells; 96T: 12 strips x 8 wells
Standard (Lyophilized)	48T: 1 vial; 96T: 2 vials
Biotinylated Antibody (100×)	48T: 60 μL; 96T: 120 μL
Streptavidin-HRP (100×)	48T: 60 μL; 96T: 120 μL
Standard/Sample Diluent Buffer	48T: 10 mL; 96T: 20 mL
Biotinylated Antibody Diluent	48T: 6 mL; 96T: 12 mL
HRP Diluent	48T: 6 mL; 96T: 12 mL
Wash Buffer (25×)	48T: 10 mL; 96T: 20 mL
TMB Substrate Solution	48T: 6 mL; 96T: 10 mL
Stop Reagent	48T: 3 mL; 96T: 6 mL
Plate Covers	48T: 1 piece; 96T: 2 pieces

Storage

Storage

*If the kit is opened, Store the whole kit at 4°C. If the kit is not used up in 1 week. Store the Pre-Coated Microplate, Standard ,Biotinylated Antibody and Streptavidin-HRP at -20°C, the rest reagents at 4°C, please used up within 6 months. *If the kit is not opened, store the whole kit: 4°C(short time storage, valid for 6 months); -20°C (long-term storage, valid for 1 year). Avoid repeated freeze-thaw cycles.

Performance Characteristics

REPEATABILITY	Intra-assay Precision (Precision within an assay)：CV% < 8% Three samples of known concentration were tested twenty times on 1 plate to assess intra-assay precision. Inter-assay Precision (precision between assays)：CV% < 10% Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.
SENSITIVITY	The minimum detectable dose was 25pg/mL.
ASSAY RANGE	62.5–4,000pg/mL
SPECIFICITY	This assay has high sensitivity and excellent specificity for detection of Human CNP. No significant cross-reactivity or interference between Human CNP and analogues was observed.