產品名稱：2 MET Plasma Fast Track(Metanephrine + Normetanephrine) 產 地：Demeditec 產品貨號：DER8300 產品規(guī)格：2x100 Tests 產品說明： Special remarks: Intended use and principle of the test 125 I – Radioimmunoassay for the quantitative determination of free Metanephrine and free Normetanephrine in plasma. First, the plasma proteins are removed by precipitation. Then the metanephrine (metadrenaline) and normetanephrine (normetadrenaline) are quantitatively acylated. The assay procedure follows the basic principle of radioimmunoassay, involving competition between a radioactive and a non-radioactive antigen for a fixed number of antibody binding sites. The amount of 125I-labelled antigen bound to the antibody is inversely proportional to the analyte concentration of the sample. When the system is in equilibrium, the antibody bound radioactivity is precipitated with a second antibody in the presence of polyethylene glycol. The precipitate is counted in a gamma counter. Quantification of unknown samples is achieved by comparing their activity with a reference curve prepared with known standards. The antisera used in this test kit only recognise the biologically relevant L-forms of metanephrines. Commercially available synthetic normetanephrine or metanephrine is always a mixture of the Dand L-forms. The ratio between both forms differs widely from lot to lot. This has important implications if synthetic metanephrines are used to enrich native samples. As only about 50% of the synthetic metanephrines, i.e. the L-portion, will be detected by use of this kit, these samples will be underestimated. Therefore only native samples should be used. 上海玉博生物技術有限公司在為生命科學領域提供豐富的產品與信息資源方面處于****地位，公司提供的產品涵蓋了二十多個國家近五十萬種產品，而且產品的數(shù)量與信息在不斷的增長和更新，公司提供的產品能夠使生命科學工作者加快對生物化學，分子生物學，細胞生物學以及蛋白質組學研究的認知，以及分子診斷和臨床醫(yī)學領域的應用。
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