Lactulose SIBO Breath Test Kit | Hydrogen & Methane | QuinTron
Lactulose SIBO Breath Test Kit – At-Home Hydrogen & Methane Testing
The QuinTron Lactulose SIBO Breath Test Kit from Gut Protocols provides a convenient way to collect breath samples at home for professional laboratory analysis. This non-invasive test measures hydrogen (H₂) and methane (CH₄) produced during the digestion and fermentation of lactulose. The resulting gas patterns can help you and your healthcare practitioner investigate digestive symptoms and assess possible small intestinal bacterial overgrowth (SIBO) or intestinal methanogen overgrowth (IMO).
Price includes the breath collection kit, laboratory analysis, interpretation and a results report. Free shipping is included both ways: we ship the kit to you at no additional charge and include a prepaid return shipping label so you can send your completed samples back to our laboratory for testing.
Key Features
- At-home QuinTron Easy Sampler collection
- Three-hour lactulose hydrogen and methane testing
- Free shipping both ways with prepaid return label
- Laboratory analysis and written interpretation included
- No referral required
How the Test Works
Follow the included preparation instructions, collect a baseline sample, drink the test substrate, then collect breath samples every 20 minutes for three hours. Return the sealed tubes using the included prepaid label. Your laboratory report and interpretation are emailed after analysis.
Frequently Asked Questions
Do I need a doctor's referral to order this SIBO breath test?
No referral is required to purchase the test kit or receive the laboratory report. We encourage you to review the findings with a qualified healthcare practitioner, who can assess your symptoms, medical history and next steps.
How long does the lactulose breath test take?
The sample collection process takes approximately three hours. Samples must be collected at the specified intervals, typically every 20 minutes. Please allow additional time for the required preparation and fasting before testing.
What gases does this test measure?
The laboratory measures hydrogen (H₂) and methane (CH₄). It does not measure hydrogen sulfide (H₂S). A negative hydrogen and methane result does not rule out every possible cause of digestive symptoms.
Are the test results and interpretation included?
Yes. Professional laboratory analysis and a written interpretation are included in the test price. These findings are intended to support a discussion with your healthcare practitioner and do not constitute a medical diagnosis on their own.
How do I return my completed breath samples?
A prepaid return shipping label is included with your kit. Once you've completed the breath samples, securely package the collection materials and use that label to return the kit to our laboratory. Both outbound and return shipping are free.
Preparation Instructions & Video
Download the Lactulose SIBO Breath Test Preparation & Collection Instructions (PDF)
Watch the SIBO Breath Test Instructional Video
Important Information
Breath testing is one tool used in the clinical evaluation of digestive symptoms. Results may be affected by preparation, recent medications, intestinal transit, collection timing and other factors. Lactulose may cause temporary bloating, gas, cramping or loose stools in some people. Consult your healthcare practitioner before testing if you have a medical condition, are pregnant, are testing a child, or are unsure whether the lactulose substrate or preparation requirements are appropriate for you. Never discontinue prescribed medication without medical advice.
These breath test results do not constitute a medical diagnosis. Gut Protocols provides laboratory testing and interpretation, but does not diagnose medical conditions or prescribe treatment. A qualified healthcare practitioner should interpret the report in the context of your symptoms and medical history.
Shipping Policy
Effective Date: October 1, 2025
Thank you for choosing Gut Protocols as your trusted provider of quality products. We are committed to ensuring a smooth and reliable shipping experience for all our customers.
This Shipping Policy outlines the terms and conditions related to the shipment of products ordered from our company. By placing an order with us, you agree to comply with the terms below.
Important Delivery Information
Delivery Estimates
Delivery times provided at checkout are estimates only and are not guaranteed delivery dates. Once a shipment has been accepted by the carrier, transit times are outside of our control.
Delays may occur due to:
• Weather conditions
• Carrier operational delays
• Customs processing
• Peak seasonal shipping volumes
• Labor disruptions or other logistical factors
Orders cannot be cancelled or refunded solely due to carrier delays once the shipment has been dispatched.
Secure Buildings, Apartments, and Unit Deliveries
Customers living in apartments, condominiums, or buildings requiring buzzer access must ensure that their shipping address includes all necessary information such as:
• Unit numbers
• Buzzer codes
• Building access instructions
Carriers are often unable to access secured buildings or individual units. In these cases, parcels may be delivered to:
• Lobby drop areas
• Mailrooms
• Concierge desks
• Designated package locations within the building
It is the customer’s responsibility to ensure that the delivery location is safe and accessible.
Once the carrier confirms delivery to the address provided at checkout, Gut Protocols is not responsible for packages that are lost, stolen, or misplaced after delivery.
Carrier proof of delivery will be considered confirmation that the shipment was successfully delivered.
Customers will receive an email notification with tracking information once delivery has been completed.
Delivery Location Recommendations
If you are concerned about package security, we recommend selecting a delivery location where someone is available to receive the parcel, such as:
• A workplace
• A concierge desk
• A trusted neighbor
• A carrier pickup location
This helps reduce the risk of lost or stolen packages.
Order Processing Time
Orders are typically processed within three business days, excluding weekends and public holidays.
Orders received after 12:00 PM (local time) may be processed on the next business day.
Orders placed before 1:00 PM (AST) are often shipped the same business day when possible.
Shipping Methods
At this time, Gut Protocols offers standard shipping only.
In the past we offered expedited shipping options; however, due to inconsistent delivery performance and a high volume of customer complaints regarding express services not meeting expected timelines, we have chosen to discontinue those options.
In many cases, expedited shipping provided only minimal delivery time improvements while significantly increasing shipping costs. To provide a more consistent and cost-effective experience for our customers, we currently ship using reliable standard delivery services.
Orders are shipped using reputable shipping providers selected based on destination, package weight, and size to ensure efficient and dependable delivery.
Shipping Rates and Delivery Timeframes
We currently offer one standard flat-rate shipping fee at checkout.
Estimated delivery times are displayed during checkout; however, these timeframes are estimates only and not guaranteed delivery dates.
Shipping fees are non-refundable in the following cases:
• If a product is unwanted or returned (see our Return Policy for details)
• If a carrier does not meet estimated delivery timelines
• If delays occur due to weather conditions, customs processing, labor disputes, or other carrier operational factors
While we will assist with shipment tracking and carrier follow-ups when possible, transit delays are outside our direct control once a package has been accepted by the carrier.
Shipment Tracking
Once your order ships, you will receive an email containing a tracking number and tracking instructions.
You can monitor your shipment directly through the carrier’s website using this tracking number.
Shipping Address Accuracy
It is the customer’s responsibility to provide accurate and complete shipping information at checkout, including apartment numbers, building names, or business names where applicable.
Gut Protocols is not responsible for:
• Undeliverable packages caused by incorrect addresses
• Packages returned due to incomplete address information
If a shipment is returned to us due to an incorrect address, additional shipping charges may apply to resend the order.
International Shipping
We offer international shipping to select countries.
Additional customs duties, taxes, or import fees may apply depending on the destination country. These charges are the responsibility of the customer.
International shipments may also be subject to customs inspection and clearance, which may cause delays beyond estimated delivery times.
Damaged or Lost Shipments
If your package arrives damaged or appears lost, please notify us within three days of receipt.
To begin the claims process we may require:
• Photographs of the damaged product or packaging
• A written description of the issue
• Carrier confirmation if a shipment is reported lost
We will work with the carrier to resolve the matter and provide an appropriate solution when applicable.
Rural and Remote Deliveries
In certain rural or remote locations, carriers may not complete final-mile delivery.
In some cases, shipments may be handed off to another local carrier to complete the final mile of delivery depending on regional service coverage.
Alternatively, your package may be held at the nearest carrier depot or pickup location if direct delivery is not available. The carrier will notify you if this applies to your shipment.
Returns and Exchanges
For information regarding returns or exchanges, please click here our Return Policy.
Policy Updates
Gut Protocols reserves the right to modify or update this Shipping Policy at any time without prior notice. Changes take effect immediately once posted on our website.
If you have questions about this policy, please contact our support team:
info@gutprotocols.com