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如何鑒別假冒偽劣人ELISA試劑盒

時間:2011/11/25閱讀:549
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鑒別人ELISA試劑盒真?zhèn)蔚姆椒ǎ?/div>
一.利用干擾實驗即可辨別ELISA試劑盒是否檢測目的抗原,方法如下:
(1)將針對試劑盒特異性的重組蛋白抗原和試劑盒中的檢測抗體配置成antibody: antigen≈1:2的混合孵育液
(2)37℃孵育15分鐘后,代替原試劑盒中的檢測抗體
(3)后續(xù)操作按照試劑盒說明書進行,,加檢測抗體、酶復(fù)合物和底物
(4)實驗完畢后,檢測其標準曲線,如果標準曲線良好則說明加入的目的抗原和試劑盒抗體不匹配,,試劑盒檢測抗體針對的是非目的抗原,該試劑盒為偽劣假造ELISA試劑盒,。
(5)如果標準曲線無線性,,則說明試劑盒檢測抗體已被目的抗原中和或干擾,影響了其實際試劑盒抗體的檢測作用,,則該試劑盒檢測抗體針對的是目的抗原,。
二.如果購買了兩盒同一公司的ELISA試劑盒A和B,,利用交叉實驗即可辨別ELISA試劑盒是否造假,方法如下:
(1)取出購買的試劑盒A的包被板兩條,。
(2)一條包被板加試劑盒A的標準品做標準曲線。
(3)另一條包被板加試劑盒B的標準品做標準曲線,。
(4)后續(xù)操作按照試劑盒說明書進行,,加檢測抗體、酶復(fù)合物和底物,。
(5)實驗完畢后,,檢測兩條標準曲線,如果兩條標準曲線一致則說明兩個ELISA試劑盒檢測的同一個指標而非A和B,,即該試劑盒為偽劣假造ELISA試劑盒,。
(6)如果兩條標準曲線不一致則說明兩個ELISA試劑盒檢測的不同指標,試劑盒A只能檢測A,,不能檢測B,,即該試劑盒為正常的ELISA試劑盒。

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