But important information can be gleaned even from a negative screening, she said.

但我们仍可从负面筛选中搜集重要信息，她说。

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As with any screening test, and most vaccines, the process is not 100 percent effective, and a small number of women with precancerous cells escape detection with false negative tests, for example.

如同大多数疫苗一样，任何筛选试验的程序都不是百分之一百的有效。举例来说，有一小部分妇女的癌前期病变细胞在筛选试验中显示假阴性而逃过了检测。

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Thrombophilia screening tests were negative.

血栓形成筛选实验阴性。

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The most common industries that fail to pass SRI negative screening are tobacco, alcohol, mining, forestry, and weapons.

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The report said the center was properly conducting reviews of complaints filed by people seeking redress from negative experiences they believed were the result of the watch list screening.

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