这会引起出血，可以通过愈创木脂检测法检查出来。
This produces the bleeding that allows detection through a guaiac test.
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。
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。
BACKGROUND: Guaiac-based fecal occult blood tests (FOBTs) for colorectal cancer screening are not specific for human hemoglobin and have low sensitivity.
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