Gut Health: Bloating & Gas Analysis
A 3-hour breath test that pinpoints one of the most common and most missed causes of chronic bloating and gas: small intestinal bacterial overgrowth (SIBO).
Measure the breath, not the guesswork.
Instead of eliminating foods one by one, you measure the hydrogen and methane your gut bacteria actually produce after a controlled sugar drink. It's the most direct way to answer "why am I so bloated?" and to tell hydrogen-driven from methane-driven overgrowth, which point to different symptom patterns and different fixes.
Enhance your insights with
Gut Health: Bloating & Gas Analysis
What's tested
What’s Measured & How to Read It
Sample Collection
Lab panel details
Sample type: Breath
HSA/FSA: Accepted
Results: Emailed to you
Preparation: No fasting required
Meets treatment requirements:
How it works
Purchase your tests
Purchase this test and any other tests you'd like online. A healthcare provider will review and approve your test requests; no healthcare provider visit is required.
Provide your sample
A collection kit will be mailed directly to you. Follow the included instructions to provide your sample, then ship it back to our lab using the prepaid return packaging.
Get your results
Our partnered facilities will process your lab work. Test results typically arrive within 14 business days, and you'll receive an email as soon as they arrive.
Lab panels designed by Board Certified Medical Practitioners
All of our expertly built lab panels are designed by a team of Board Certified Medical Practitioners who lead the charge in preventative medicine.
Lab work FAQs
Please read our FAQs page to find out more.
How soon do I need to return my specimen samples?
Plan to complete your collection early in the work week and be sure to ship your pack within 24 hours of collection to ensure specimens are viable.
You should also note that some collection packs contain materials that expire (this date is printed on the box label). Plan to collect and return your pack well before that date or within 45 days of receiving the collection pack, whichever comes first. If the pack is not returned within this timeline, we may not be able to complete your test.
How quickly will my lab results arrive?
Your lab results will typically arrive within two weeks, though processing time may vary based on the size and complexity of your panel. Rest assured, once your results are ready, they will be securely delivered to your email.
Does Marek Diagnostics accept insurance?
Marek Diagnostics is a cash-pay service. Our platform offers direct access to comprehensive testing without the limitations, denials, or delays imposed by insurance companies. If traditional insurance covered the kind of proactive, high-quality lab work we offer, Marek Diagnostics wouldn’t need to exist.
However, many clients successfully use their HSA/FSA to cover their testing costs. Marek Diagnostics is partnered with TrueMed for convenient deployment of HSA/FSA funds at checkout.
Why can’t I order labs in New York, New Jersey, or Rhode Island?
Due to state regulations, Quest services are not available to residents of NY, NJ, or RI when ordered through our platform. If your address is in one of these states, you'll be notified at checkout and won’t be able to complete your order for restricted items.
You can still purchase:
- Supplements, apparel, and other non-lab items
Not sure which items are restricted? The checkout system will alert you automatically, or you can contact our team for assistance.