大便潜血是怎么引起的？
其他有价值的发现包括直肠肿瘤，血性粪便或大便潜血。
Other useful findings include rectal tumor, blood stained stool, or occult blood.
常用的大便潜血试验的方法就是依靠化学色素转化来检测微量血液。
The commonly used stool occult blood tests rely on chemical color conversions to detect microscopic amounts of blood.
对160名病人和320名正常人进行判别的结果与通常采用的大便潜血试验比较，假阴性率降低到23.75%。
The comparison of 160 cases and 320 controls tested with those examined by fecal occult blood test has exhibited a decrease to 23.750% in the false negative rate.
为检测1例恶性肿瘤，可能需要邀请264位患者进行大便潜血试验，或者60例进行乙状结肠镜检，或者53例患者进行结肠镜检。
To detect 1 advanced neoplasm, it would be necessary to invite 264 people with FIT, 60 with FS, 53 with TC.
为检测1例恶性肿瘤，可能需要邀请264位患者进行大便潜血试验，或者60例进行乙状结肠镜检，或者53例患者进行结肠镜检。
To detect 1 advanced neoplasm, it would be necessary to invite 264 people with FIT, 60 with FS, 53 with TC.
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