This is an alternative to the
colonoscopy. You do it at home by basically using
a kit. It contains
a liner you put in the toilet, you go and then drop a few provided drops into the liner, tie it off and put it in the provided container to send to the lab. It's 95 % effective. However, if it is positive, you have to have a regular colonoscopy. You know that this time around, you already have a polyp. https://www.mayoclinic.