Do I have to drink all the solution to cleanse my colon?

Please follow all instructions and make every effort to drink all of the purging solution. The height and weight of a patient does not determine the amount of solution needed to purge your colon. Remember, we are trying to clean out your entire digestive tract. If your colon is not clean, the physician cannot do a thorough exam. We may have to reschedule your test for another day.