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Mouse NT-ProBNP(N-Terminal Pro-Brain Natriuretic Peptide) ELISA Kit
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ELK5445
Size： Price：
48 T $320.00
96 T $458.00
96 T*5 $1947.00
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Product name: Mouse NT-ProBNP(N-Terminal Pro-Brain Natriuretic Peptide) ELISA Kit
Reactivity: Mouse
Alternative Names: NT-Pro-BNP; ; N-BNP; ANFB_HUMAN; BNP(1-32); BNP(5-29); BNP-32; Gamma-brain natriuretic peptide; nppb
Assay Type: Sandwich
Sensitivity: 28 pg/mL
Standard: 5000 pg/mL
Detection Range: 78.13-5000 pg/mL
Sample Type: serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Length: 3.5h
Research Area: Endocrinology;Cardiovascular biology;
Test principle: 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 Mouse NT-ProBNP. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Mouse NT-ProBNP. 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 Mouse NT-ProBNP, 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 Mouse NT-ProBNP in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (pg/mL) OD Corrected OD
5000.00 2.103 2.026
2500.00 1.608 1.531
1250.00 1.233 1.156
625.00 0.937 0.860
312.50 0.527 0.450
156.25 0.361 0.284
78.13 0.206 0.129
0.00 0.077 0.000

Precision

Intra-assay Precision (Precision within an assay)：CV%<8%

Three samples of known concentration were tested twenty times on one 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.

Recovery

Matrices listed below were spiked with certain level of recombinant NT-ProBNP and the recovery rates were calculated by comparing the measured value to the expected amount of NT-ProBNP in samples.
Matrix Recovery range Average
serum(n=5) 86-99% 92%
EDTA plasma(n=5) 80-95% 87%
Heparin plasma(n=5) 90-105% 97%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of NT-ProBNP and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Matrix 1:2 1:4 1:8 1:16
serum(n=5) 85-100% 84-98% 95-101% 88-102%
EDTA plasma(n=5) 88-104% 84-98% 95-105% 88-102%
Heparin plasma(n=5) 87-96% 91-101% 87-98% 89-103%