SIBO Breath Test
Find out if bacterial overgrowth is behind your symptoms
A non-invasive breath test that detects bacterial overgrowth in the small intestine, a common cause of bloating and digestive issues.
$309$386Save $77
HSA / FSA eligible
Free shippingSpecimen:BreathCollection:SelfCLIA-certified lab:GenovaResults:1-2 weeks
Simple Process
How it works
From order to insights in three easy steps — no doctor’s visit required.
1
Order + Activate Test
Your breath collection kit is shipped directly to your home. Activate it online before beginning your test preparation. Discontinue antibiotics 4 weeks prior to testing (unless testing to confirm eradication after treatment).
2
Prepare + Take Breath Samples
Follow the 24-hour preparation diet (avoiding fermentable foods), then fast overnight for 12 hours with only water. After drinking the lactulose solution (10g), collect breath samples at baseline and at 20, 40, 60, 90, and 120 minutes using the provided collection tubes.
3
Ship + Receive Results
Ship your breath samples using the prepaid shipping materials. Results are typically available within 7 days with a detailed report showing hydrogen and methane gas levels over time, interpreted according to North American consensus guidelines.
Is This Right for You?
This test is designed for people who
If any of these apply, this test can give you clarity and peace of mind.
Deal with chronic bloating, gas, or abdominal discomfort and want a clear answer
Have been told you have IBS but suspect bacterial overgrowth may be the real cause
Experience symptoms after eating that standard digestive tests haven’t explained
Want to know whether hydrogen or methane producing bacteria are driving your gut issues
Have tried dietary changes or probiotics without lasting relief and need a targeted diagnosis
Prefer a simple, non-invasive at-home breath test with results you can act on right away
3 key biomarkers
What's included in your report
Each result will include your value, your personalized optimal range, and a plain-language interpretation.
Peak Hydrogen (H₂)
See whether bacteria in your small intestine are quietly fueling bloating, gas, and unexplained digestive symptoms.
Peak Methane (CH₄)
The clearest signal that gut microbes are slowing your digestion and driving stubborn constipation.
Peak H₂ + CO₂
Find out whether bacteria in your small intestine are fermenting food and driving symptoms standard gut tests miss.
Common Questions