In this study, the performance characteristics of the immunochemical test were superior to those of the Hemoccult II guaiac-based test. Note, however, that Hemoccult II is less sensitive than the ...

The number of colonoscopies needed to detect one person with advanced neoplasia was 5.1 for guaiac-positive patients but only 2.7 for immunochemical-test–positive patients. Colonoscopy revealed ...