What Can I Eat Before Sibo Test

What Can I Eat Before SIBO Test?

If you’re scheduled to undergo a small intestinal bacterial overgrowth (SIBO) test, it’s crucial to follow a specific diet in the days leading up to the test. This diet helps ensure accurate results by reducing the number of bacteria in your small intestine. Here’s what you can eat before a SIBO test:

1. Plain proteins: Opt for plain, unseasoned proteins like chicken, fish, turkey, or tofu. Avoid marinated or processed meats, as they may contain ingredients that can interfere with the test.

2. Non-starchy vegetables: Include a variety of non-starchy vegetables such as spinach, kale, broccoli, zucchini, and bell peppers. These are generally well-tolerated and have lower amounts of fermentable carbohydrates.

3. Fruits: Stick to low-sugar fruits like berries, kiwis, and citrus fruits. Avoid high-sugar fruits such as bananas, mangoes, and grapes.

4. Gluten-free grains: If tolerated, you can consume small amounts of gluten-free grains like quinoa, rice, and millet. However, it’s best to limit their intake to avoid potential fermentation in the gut.

5. Healthy fats: Include healthy fats in your diet, such as avocados, olive oil, coconut oil, and nuts. These provide essential nutrients and help you feel satiated.

6. Herbal teas: Opt for herbal teas like chamomile, peppermint, or ginger tea. Avoid caffeinated beverages, as they can stimulate gut motility.

7. Plain water: Hydration is essential, so make sure to drink plenty of plain water throughout the day.


1. Can I eat before a SIBO test?
It is recommended to fast for at least 12 hours before the test to allow accurate results.

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2. Can I consume dairy products?
It’s best to avoid dairy products, as lactose can be a fermentable carbohydrate. Opt for lactose-free alternatives if needed.

3. Can I use sweeteners?
Artificial sweeteners like sorbitol, xylitol, and mannitol are best avoided, as they can ferment in the gut. Stevia or small amounts of natural sweeteners like honey may be acceptable.

4. Can I have alcohol?
It’s recommended to abstain from alcohol for at least 24 hours before the test, as it can affect gut motility and bacterial growth.

5. Can I take supplements?
Consult with your healthcare provider regarding any supplements you are currently taking, as some may interfere with the test.

6. Can I drink coffee or tea?
Caffeinated beverages can stimulate gut motility, which may affect the test results. It’s best to stick to herbal teas instead.

7. How long should I follow this diet?
Typically, it’s advised to follow this diet for 24 to 48 hours before the SIBO test. However, always consult with your healthcare provider for specific guidelines based on your test requirements.

Remember, following a proper diet before a SIBO test is crucial for accurate results. Always consult with your healthcare provider for personalized advice tailored to your specific needs.