General advice
The test you are going to have requires dietary preparation beforehand to obtain valid and reliable results. The preparation consists of a low-carbohydrate diet that you must follow for the 2 days before the test.
Please follow these instructions strictly:
- It is very important to follow the menu exactly as set out below. Any change will affect the test result.
- You may drink water without restriction. Sugary drinks are not allowed. Do not eat or drink anything that is not included in the diet.
- The required 12-hour fast means having dinner no later than 7:00 p.m. on the day before the test.
- You must stop all glucose-containing IV fluids at least 18 hours before the test.
Below are the menus for the two days before the test. If you have any questions, please do not hesitate to contact our unit.
Menu
Day 1
Breakfast
- Plain omelet (2 eggs – 120 g)
- 50 g cooked ham + 40 g semi-cured cheese
- Coffee with whole milk and stevia (100 ml milk)
- Olive oil (5 g)
Mid-morning
- Herbal tea with stevia + 20 g nuts
Lunch
- Salad (100 g lettuce, 50 g tomato, 50 g carrot)
- Grilled beef (150 g) or lean pork (150 g)
- Apple (120 g)
- Olive oil (15 g)
Afternoon snack
- Whole-grain toast (10 g)
- Full-fat fresh cheese (60 g)
- Herbal tea with stevia
- Olive oil (5 g)
Dinner
- Potato-free zucchini soup with 2 cheese portions (200 g zucchini + 2 cheese portions – 30 g)
- Grilled white fish (150 g)
- Plain whole-milk yogurt with stevia (125 g)
- Olive oil (15 g)
Day 2
Breakfast
- Scrambled eggs (2 eggs – 120 g)
- 50 g serrano ham + 40 g semi-cured cheese
- Coffee with whole milk and stevia (100 ml milk)
- Olive oil (5 g)
Mid-morning
- Herbal tea with stevia + 20 g nuts
Lunch
- Salad (100 g lettuce, 50 g tomato, 50 g carrot)
- Grilled oily fish (150 g)
- Apple (120 g)
- Olive oil (15 g)
Afternoon snack
- Whole-grain toast (10 g)
- Full-fat fresh cheese (60 g)
- Herbal tea with stevia
- Olive oil (5 g)
Dinner
- Green beans (200 g)
- Grilled chicken (150 g)
- Plain whole-milk yogurt with stevia (125 g)
- Olive oil (15 g)