免疫学法检查粪便中的潜血,解决了化学法不能检查出的粪便中微量潜血,被认为是对直肠癌诊断很有希望的过筛试验。作者从1985年开始在一般公司团体职员中找检查对象,进行免疫学法检查粪便潜血,用于对大肠癌进行过筛,潜血阳性者,再用内窥镜和X 射线检 The immunological method examines the occult blood in feces and solves the microscopic occult blood that can not be detected by the chemical method. It is considered to be a promising screening test for rectal cancer diagnosis. From 1985, the author began to look for employees in the general company group for immunological examination of faecal occult blood, for screening of colorectal cancer, positive occult blood, and endoscopic and X-ray examination.