SIBO Breath Test (2-Hour & 3-Hour) | SIBO Assessment | by Genova Diagnostics

Genova SIBO Breath Test – At-Home Small Intestinal Bacterial Overgrowth Assessment

The Genova SIBO Breath Test is a non-invasive, at-home assessment designed to evaluate Small Intestinal Bacterial Overgrowth (SIBO) by measuring hydrogen and methane gas production following a lactulose challenge drink. This test can help identify bacterial overgrowth patterns contributing to chronic digestive symptoms and provides valuable information for developing a targeted treatment approach.

What Is SIBO?

Small Intestinal Bacterial Overgrowth (SIBO) occurs when excessive bacteria colonize the small intestine, where relatively few bacteria should normally reside. This bacterial overgrowth can interfere with digestion, nutrient absorption, and overall gastrointestinal function.

Common symptoms may include:

• Bloating
• Excessive gas
• Abdominal discomfort
• Diarrhea or constipation
• Belching
• Food sensitivities
• Brain fog
• Nutrient malabsorption

What This Test Measures

• Hydrogen gas production
• Methane gas production
• Bacterial fermentation activity
• Small Intestinal Bacterial Overgrowth (SIBO)
• Intestinal Methanogen Overgrowth (IMO)

Which Test Is Right For Me?

Genova offers both a 2-Hour and 3-Hour SIBO Breath Test. Both tests utilize the same lactulose challenge methodology and evaluate hydrogen and methane gas production.

2-Hour SIBO Breath Test

• Appropriate for most individuals undergoing SIBO evaluation
• Measures hydrogen and methane production over approximately two hours
• Convenient shorter collection period

To view a sample Genova Diagnostics SIBO Breath Test 2-Hour Report, please tap/click here.

3-Hour SIBO Breath Test

• Includes all features of the 2-Hour test
• Extends breath collection by an additional hour
• May provide additional clinical insight for individuals with constipation, slower gastrointestinal transit, delayed motility, or when a more comprehensive assessment is desired

To view a sample Genova Diagnostics SIBO Breath Test 3-Hour Report, please tap/click here.

Who May Benefit From SIBO Testing?

• Bloating or excessive gas
• Abdominal pain or belching
• Constipation or diarrhea
• IBS
• Fatty stools
• Food sensitivities
• Nutrient malabsorption
• Chronic indigestion
• Leaky gut concerns
• Brain fog
• Suspected intestinal dysbiosis
• Rosacea

How SIBO Breath Testing Works

1. Lactulose Challenge – Consume the provided lactulose drink to stimulate bacterial fermentation.
2. Breath Sample Collection – Collect breath samples at timed intervals per kit instructions.
3. Laboratory Analysis – Return samples to the Genova lab for hydrogen and methane measurement.
4. Results & Interpretation – Results are uploaded to your secure portal within 7–17 days.

Why Test For SIBO?

Identifying bacterial overgrowth can help guide treatment strategies and may improve digestive function, nutrient absorption, bloating and gas, bowel regularity, food tolerance, and overall gastrointestinal health.

How It Works

1. Place your order.
2. Test kit ships directly from the laboratory.
3. Complete your breath sample collection at home.
4. Return samples to the lab using the prepaid materials provided.
5. Results are uploaded to your secure portal.

Turnaround Time

Results are typically available within 7–17 days after the laboratory receives your completed sample. Certain gut testing methodologies may occasionally require up to approximately 27 days for completion.

Looking For Help Understanding Your Results?

The Genova SIBO Breath Test does not include a consultation or written interpretation report. Once your results become available, you may wish to schedule a 30-Minute Functional Lab Test Consultation with one of our experienced practitioners to review your findings and discuss possible next steps.

A consultation can help you:

• Better understand your SIBO breath test results
• Discuss potential contributing factors
• Review diet and lifestyle considerations
• Explore supplement and support options
• Determine appropriate next steps based on your individual situation

30-Minute Functional Lab Test Consultation:
Book Your Consultation →

Important Information

• Name matching required for lab kit registration.
• New York state restrictions apply.
• No refunds on lab tests, consultations, or written summaries once purchased.

Frequently Asked Question

What's the difference between the 2-Hour and 3-Hour SIBO Breath Tests?
The 3-Hour version extends breath collection by an additional hour and may provide additional clinical information for individuals with slower gastrointestinal transit or constipation.

📝 View our informative blogs on 5 Signs Your Digestive Symptoms May Not Be Normal and Could SIBO Be Behind Your Bloating, Brain Fog & Digestive Issues?

SIBO Breath Test (2-Hour & 3-Hour) | SIBO Assessment | by Genova Diagnostics