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            人氨基端前腦鈉素(NT-ProBNP)酶聯(lián)免疫吸附檢測試劑盒
            ELK1212
            規(guī)格: 價格:
            48T ¥1680.00
            96T ¥2400.00

            Overview 文獻

            Product name: Human NT-ProBNP(N-Terminal Pro-Brain Natriuretic Peptide) ELISA Kit
            Reactivity: Human
            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: 15 pg/mL
            Standard: 2500 pg/mL
            Detection Range: 39.07-2500 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 Human NT-ProBNP. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human 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 Human 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 Human NT-ProBNP in the samples is then determined by comparing the OD of the samples to the standard curve.

            標準曲線

            Concentration (pg/mL) OD Corrected OD
            2500.00 2.037 1.951
            1250.00 1.572 1.486
            625.00 1.216 1.130
            312.50 0.921 0.835
            156.25 0.563 0.477
            78.13 0.403 0.317
            39.07 0.256 0.170
            0.00 0.086 0.000

            精密度

            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.

            回收率

            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) 90-103% 96%
            EDTA plasma(n=5) 81-96% 88%
            Heparin plasma(n=5) 78-94% 86%

            線性

            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) 82-94% 95-102% 87-103% 88-95%
            EDTA plasma(n=5) 98-107% 90-99% 88-97% 85-97%
            Heparin plasma(n=5) 81-94% 87-105% 79-95% 96-105%
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