推荐回答（1个）
灵敏度高是elisa试剂盒的一大优点，而这其实也是和检测样本有些关联的，我们一般说来，如果待测样本中目标蛋白的浓度比较高，则对灵敏度要求相对小一些。如果待测样本中目标蛋白的浓度比较低，则必须考虑灵敏度的问题。
一般来说，试剂盒曲线上的最小浓度是比较准确的，低于这个值因为与曲线是个“S”型结构有关，所以结果是有偏差的，是一种估算。再加上实验误差，所以达不到理想的效果。建议选择试剂盒时，应该看曲线上最小的浓度值，而不是试剂盒上写的灵敏度。
那么ELISA试剂盒检测哪些范围呢？一般说来，诊断试剂的检测范围以ng/ml计。而常见的科研试剂盒中的样本中的目标蛋白，范围可随样本的类型而变化。所以实验前应通过文献和预实验的方法确定样本是否在所购试剂盒的范围内，如果不在检测范围内，分两种情况对待。
A、如果样本中目标蛋白太低，需找相应灵敏度更高的试剂盒来检测或浓缩样本；
B、如果样本中目标蛋白太高，则需要进一步稀释后进行检测。
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