Screening for colorectal cancer: the rationale and a recent advance in the detection of fecal occult blood.

For the very first time, an occult blood test has been designed to conform to convenient and natural bathroom habits. For the very first time, we therefore expect the general public to agree willingly to participate in occult blood testing. For the very first time, we expect Early Detector to successfully screen the general public, so that survival rates from colon and rectal cancer may show a significant improvement in the next decade.