结直肠癌的发病率逐年升高,日益成为威胁人类健康的严重问题。大约60％的病人在做出诊断时已有淋巴结或远距离转移。其5年生存率只有42％。大便潜血检查是早期发现结直肠癌的最好途径。最为广泛应用的是用愈创木脂颜色反应对人群做大便潜血普查。虽然这种方法对早期发现无症状病人起了相当大的作用,但它缺乏特异性,易形成假阳性反应。为此,作者发明了 The incidence of colorectal cancer has increased year by year and has become a serious problem that threatens human health. About 60% of patients have lymph nodes or distant metastases at the time of diagnosis. Its 5-year survival rate is only 42%. Fecal occult blood tests are the best way to detect colorectal cancer early. The most widely used is the use of guaiac color reaction to do fecal occult blood screening. Although this method has played a considerable role in early detection of asymptomatic patients, it lacks specificity and is prone to false positive reactions. To this end, the author invented