Why have one? Tests never healed anyone. All they ever proved to me was that a long line of people got paid for something I could do myself. What they can do for you is NEVER going to result in healing.
The first time I did a Schulze colon clease, I got out 12-15 dried up polyps. The #2 formula made them dry up and fall off my colon wall.
Now, that I'm doing this second colon cleanse, two days ago I got a 5 inch polyp off. That was a biggie. They just dry up and fall off. Nobody prying into your body. Just clean it out. It works. And the price is cheap enough. When you're done, you know you're going to be well.