An important screening test for colorectal cancers and polyps is the stooloccultbloodtest.
一个重要的大肠癌和息肉的筛查检查就是粪便潜血试验。
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You should send it to do black stooloccultbloodtest, such as occult blood positive, that upper gastrointestinal bleeding, it should be consistent with a water wash corrosive link.
你应该送黑便做大便隐血试验，如隐血阳性，说明上消化道出血，那就应与洗甲水的腐蚀性联系起来。
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Fecal Occultbloodtest Every year to detect hidden blood in the stool, a possible sign of colon cancer.