The commonly used stool occultbloodtests 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。
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BACKGROUND: Guaiac-based fecal occultbloodtests (FOBTs) for colorectal cancer screening are not specific for human hemoglobin and have low sensitivity.