At a Glance: Second Generation FIT® Fecal Immunochemical Test is FDA cleared to aid in the detection of colorectal cancer, diverticulitis, colitis, and Crohn's Disease. The Pinnacle BioLabs Second Generation FIT® test is the number one selling over the counter FIT test in the United States for seven consecutive years.† The test is easy to perform in the comfort of your own home and results are ready within five minutes. With Second Generation FIT®, no prescription, doctors visit, or mailing a sample back to a laboratory is required. This kit contains two complete tests with at least 18 month shelf life. Second Generation FIT® is tax-inclusive and ships free.