The preparation varies depending on your health history and the procedure planned. For endoscopic examination of the upper digestive tract, food and fluids are withheld for several hours before the procedure. For endoscopic examinations of the colon, a special diet needs to be followed for several days in addition to the need for a thorough bowel prep to cleanse your colon prior to the procedure. There may be variations to these preparations, depending on your condition. It is very important to follow your instructions carefully, as an incomplete preparation may require an additional appointment. Please consult our office if you have any questions about your preparation. A full preparation is necessary, as a partial prep will likely result in an additional appointment.