Many patients with colon polyps are tested negative for stool occult blood.
许多患者的粪便潜血检测结果呈阴性，但却患有结肠息肉。
An important screening test for colorectal cancers and polyps is the stool occult blood test.
一个重要的大肠癌和息肉的筛查检查就是粪便潜血试验。
Even under ideal testing conditions, at least 20% of colon cancers can be missed by stool occult blood screening.
即使是在理想的检测环境下，也至少有20%的结肠癌在粪便潜血检查过程中被漏诊。
The commonly used stool occult blood tests rely on chemical color conversions to detect microscopic amounts of 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。
You should send it to do black stool occult blood test, 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。
Fecal Occult blood test Every year to detect hidden blood in the stool, a possible sign of colon cancer.
粪便潜血检验每年一次，以检查粪便中是否潜血，粪便潜血是结肠癌的可能征兆。
Stool samples can be obtained to test for occult blood (see below).
粪便样本，可用来测试潜血(见下文)。
It is recommended that all individuals over the age of 40 have yearly digital examinations of the rectum and their stool tested for hidden or "occult" blood.
原则上建议每个人在40岁以后每年都进行一次直肠指检及粪便潜血检测，来检测隐藏或“藏匿”的血液。
It is also important to realize that stool which has tested negative for occult blood does not mean the absence of colorectal cancer or polyps.
同样重要的一点是要认识到，粪便潜血化验结果呈阴性也并不意味着没有大肠癌或息肉。
Other useful findings include rectal tumor, blood stained stool, or occult blood.
其他有价值的发现包括直肠肿瘤，血性粪便或大便潜血。
A small amount of stool sample is smeared on a special card for occult blood testing.
在一种特殊卡上涂上少量粪便样本用于潜血检查。
A small amount of stool sample is smeared on a special card for occult blood testing.
在一种特殊卡上涂上少量粪便样本用于潜血检查。
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