Lactulose/Lactose Testing |  Preparation Instructions

To ensure a successful exam, please follow all instructions carefully. Please bring a list of all your current medications, including any over-the-counter medications with you. If you must reschedule or cancel your appointment, please call 503-229-1883.

  • Please notify our office if you have recently been on antibiotic therapy (within the last 2 weeks), experienced runny diarrhea, or had a colonoscopy.
  • 24 hours before the test do not eat the following:
    • Grain products, i.e.: pasta, whole grains, high fiber cereals
    • Fruits, i.e. whole fruit, fruit juice, and dried fruit
    • Vegetables and vegetable juice
    • Nuts, seeds, beans, and other legumes
    • All dairy products, except for eggs.
    • Starches or any products that contain milk sugar, such as: milk, yogurt, sour cream, and ice cream.
    • Avoid all products that contain corn, i.e. pastas, meat, bread, etc.
  • Nothing to eat or drink 12 hours prior to test, except for water.
  • Do not sleep, exercise or use any tobacco products for at least one hour prior to test, or at any time during the testing process.
  • Arrive on time at the designated location with completed paperwork, photo ID, and insurance card.