如果要测量血浆中内毒素的实际值，则应同时使用加标样品和未加标样品。
If the actual value of endotoxin in plasma would be measured, both the spiked and unspiked samples should be used.
选择了六种市售食品用作加标实验样品。
Six food samples were fortified with Sudan I and extracted by simple sample preparation.
加标试验表明，该方法的检测限为10个卵囊。
The spiking test shows that the detection limit of this method is 10 oocysts.
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