• <th id="abimu"></th>

      1. 產(chǎn)品中心

        四氫葉酸(THFA)酶聯(lián)免疫吸附檢測試劑盒
        ELK8034
        規(guī)格: 價格:
        48T ¥2240.00
        96T ¥3200.00

        Overview 文獻(xiàn)

        Product name: THFA(Tetrahydrofolic Acid) ELISA Kit
        Reactivity: General
        Alternative Names: H4FA; THF; Tetrahydrofolate
        Assay Type: Competitive Inhibition
        Sensitivity: 0.57 ng/mL
        Standard: 100 ng/mL
        Detection Range: 1.57-100 ng/mL
        Sample Type: serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
        Assay Length: 2h
        Research Area: Enzyme & Kinase;
        Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with THFA protein. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to THFA. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. 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 THFA 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
        100.00 0.179
        50.00 0.336
        25.00 0.527
        12.50 0.899
        6.25 1.157
        3.13 1.537
        1.57 1.863
        0.00 2.057

        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 THFA and the recovery rates were calculated by comparing the measured value to the expected amount of THFA in samples.
        Matrix Recovery range Average
        serum(n=5) 97-105% 101%
        EDTA plasma(n=5) 87-99% 92%
        Heparin plasma(n=5) 88-107% 92%

        線性

        The linearity of the kit was assayed by testing samples spiked with appropriate concentration of THFA 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) 81-94% 93-107% 87-101% 91-104%
        EDTA plasma(n=5) 87-98% 83-94% 85-98% 85-97%
        Heparin plasma(n=5) 82-95% 96-105% 87-98% 85-97%
        關(guān)閉

        在線咨詢

        Online consultation

        • 在線咨詢
        • 技術(shù)支持

        關(guān)注微信公眾號

        微信掃一掃立即咨詢

        微信掃一掃立即咨詢

        關(guān)閉
        一级a爱片国产亚洲精品,97se亚洲综合色区,日朝欧美亚洲精品,欧洲韩国亚洲一区二区三区

      2. <th id="abimu"></th>