BACKGROUND: Guaiac-based fecal occult blood tests (FOBTs) for colorectal cancer screening are not specific for human hemoglobin and have low sensitivity.

背景：以愈创木脂为试剂的粪便潜血实验（FOBTs）用于结直肠癌的筛查中，不仅对人血红蛋白特异性不高而且敏感性也很低。

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Fecal occult blood test had a positive rate of 84% and 3 consecutive tests (positive rate 100%) are important rather than one test (positive rate 20%).

粪潜血试验的阳性率为84%，作1次试验的阳性率仅20%，连续3次试验的阳性率为100%。

youdao

Fecal occult blood test had a positive rate of 84% and 3 consecutive tests (positive rate 100%) are important rather than one test (positive rate 20%).

粪潜血试验的阳性率为84%，作1次试验的阳性率仅20%，连续3次试验的阳性率为100%。

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