Re: stool tests are notoriously inaccurate

I had a colonoscopy and the doc told me if I had worms the worms would be hanging on the the walls of my intestines...so they saw nothing, and literaly laughed at me thinking I was crazy to even think I had worms after a negative stool test. Despite my persistance with tryig to convince the doctors that I know Its parasites, I got no-where and then found CZ to be much more helpful. I think you are right about the pre-clean prior to the colonoscopy. And of course if the worms have scattered out of the colon they wont find them.