FIT (Faecal Immunochemical Test) is a test that looks for blood in a sample of your poo. It looks for tiny traces of blood that you might not be able to see, and which could be a sign of cancer.
There are three main things to look out for: blood in your poo that happens for no obvious reason - it may be bright red or dark red a change in how you poo - such as going to the toilet more ...