There are various preparations for different types of ultrasound examinations. For example, certain exams such as an ultrasound of the gallbladder require fasting from midnight, while other exams such as a pelvic ultrasound require the drinking of 40 oz. of fluids one hour prior to the exam. Always check with your physician to determine what type of preparation is necessary for your particular test.
For Abdominal/ Gallbladder Ultrasounds: Patients are asked not to eat or drink (no gum chewing) after midnight prior to exam. Patients are scheduled for appointments after 12:00 Noon are asked not to eat or drink anything at least 5 hours prior to the exam. You may drink water. Avoid fatty foods. Medications are permissible with a small amount of water.
For Pelvis/Prostate Ultrasounds: Patients are asked to drink four to five 8 ounce glasses of water one hour prior to exam. Patients may not urinate before exam. For Obstetrical Ultrasounds: If under 3 months of pregnancy, follow same instructions as Pelvis Ultrasound.