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            一步法人氨基端前腦鈉素(NT-ProBNP)酶聯(lián)免疫吸附檢測(cè)試劑盒
            ELK035ES
            規(guī)格: 價(jià)格:
            48T ¥1960.00
            96T ¥2800.00

            Overview

            Product name: EasyStep 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: 0.94 ng/mL
            Standard: 60 ng/mL
            Detection Range: 0.94-60 ng/mL
            Sample Type: Serum, plasma
            Assay Length: 1.5h
            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, and the Human NT-ProBNP standard plate wells that pre-coated using protein-related techniques are provided separately. Standard/Sample Diluent Buffer or samples are added to the appropriate microtiter plate wells ,then added a HRP-conjugated antibody specific to Human NT-ProBNP. After TMB substrate solution is added, only those wells that contain Human NT-ProBNP and HRP-conjugated antibody 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(biāo)準(zhǔn)曲線

            Concentration (ng/mL) OD Corrected OD
            60.00 2.207 2.106
            30.00 1.643 1.542
            15.00 1.251 1.150
            7.50 0.847 0.746
            3.75 0.625 0.524
            1.88 0.301 0.200
            0.94 0.288 0.187
            0.00 0.101 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) 89-98% 83-103% 98-105% 92-101%
            EDTA plasma(n=5) 96-101% 85-92% 79-96% 89-101%
            Heparin plasma(n=5) 93-105% 85-97% 90-99% 82-101%

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