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Publications and Products
 South Dakota
Gestational Diabetes Care Guidelines
3-Day Dietary Preparation
for 3-hour 100 g Oral Glucose Tolerance Test
Getting Ready
- It is important that you eat at least 3 meals a day starting3
days before the test. The meals should contain lots of starches (carbohydrate
foods, such as bread, cereal, pasta, grains, rice, beans, starchy vegetables,
potatoes, corn, peas, fruit and fruit juice, milk, yogurt, sweets…)
- Three days before the test, you must also consume extra carbohydrate
calories. Each day, eat 1 of the following in addition to your regular
meals:
- 2 slices of bread
- 1 piece of cake
- 1 candy bar
- 1 can non-diet soda
- Other food equivalent to 30 g carbohydrate
The Night Before Your Test
- After midnight the night before your scheduled test, do not eat or
drink anything besides water.
- Do not smoke, chew gum and eat cough drops or candy, or take iron
or vitamin pills.
The Test
- In the morning when you come to your appointment a blood sample will
be taken (fasting blood glucose) and then you will be asked to drink
a cold sweet drink (Glucola 100 g).
- Blood samples will then be taken at 1, 2, and 3 hours after you finish the sweet drink. During the test, you are not
allowed to eat or drink anything except water.
- You may bring a snack to eat after the test is completed.
Please follow the instructions above carefully. It is very important
not to "diet" before the test as dieting may cause false results.
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Page last modified: December 20, 2005
Content Source: National Center for Chronic Disease Prevention and Health Promotion
Division of Diabetes Translation
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Diabetes & Me