The FOB rapid test is a quick and easy way to detect hidden blood in stool samples, which can help detect bleeding caused by various digestive problems such as diverticulitis, colitis, polyps, and colorectal cancer. It is particularly useful for routine check-ups, monitoring ongoing bleeding and screening for colorectal cancer. Unlike older tests, this one does not require a special diet beforehand, making it more convenient. It is designed for use by healthcare professionals and can help detect colorectal cancer early, potentially saving lives.