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。
The predictive value of positive and negative were 98% and 94%. Conclusion MSCTA has diagnostic value in intracranial aneurysm and helpful for its screening before surgery or interventional therapy.
阳性预测值和阴性预测值分别为98%和94%。结论MSCTA对颅内动脉瘤的诊断具有较高价值，可以作为外科治疗或介入治疗颅内动脉瘤的筛选方法。
To explore if the method comprising Limulus amoebocyte lysate (LAL) test and enumeration of total Gram-negative bacteria (GNB) can be used for screening of irradiated chicken.
探讨内毒素检测(LAL)与革兰氏阴性菌计数(GNB)相结合的方法应用于辐照鸡肉的筛选的可能性。
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