Before the PET scan, a blood test (about 1 teaspoon) will be done to check your blood sugar level. The day before the scan, you will be asked to follow a special diet. This is to control the amount of sugar in your bloodstream. One the day of the scan a small tube will be placed in your vein to administer a very small amount of radioactive material. This material allows the PET scanner to "see" where the sugar is metabolized in your body. The amount of time the scan takes depends on how tall you are and why you are having the test. After the scan, patients rest for about 45 to 90 minutes before being discharged. Family members are not allowed to come in with the patient during the test. Overall, you should allow about 3 hours for this scan. If you had this test prior to entering the study, you do not have to have this test repeated as long as it was done within 4 weeks of the laparoscopy.