Ditto to Nan's comments but I'll add a couple of things; the night before you have the test, you must drink a gallon of some very unpleasant solution to empty your intestines, and that stuff isn't real good tasting. Here's a suggestion; starting 3 days before the test, change your eating to soups and salads to minimize the effects of drinking this stuff.
I had to drink the whole gallon before my first but the second time I had the test I only had to drink a quart before it was running straight thru. Hey that may sound like TMI but I wish someone had told me before my first because drinking a gallon of anything in an hour or two isn't easy and that stuff is dreadful.
The other thing is the wonderful feeling you will have when he tells you your colon is free and clear of any growth. They could do one of those "priceless" mastercard commercials using successful results as the punchline. My advice, it's perfectly painless so don't put it off.
Best of luck to you.
