摘要: Colorectal cancer is a major public health burden worldwide. There clear-cut evidence that screening will reduce colorectal mortality and the only contentious issue which tool to use. Most points towards with fecal occult blood testing. The immunochemical tests have higher sensitivity than guaiac-based tests. In addition, their automation haemoglobin quantifi cation allows threshold for colonoscopy be selected can accommodated within individual care systems.